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Innovation and evolution at the edge: origins and fates of gastropods with a labral tooth

Identifieur interne : 007D70 ( Istex/Corpus ); précédent : 007D69; suivant : 007D71

Innovation and evolution at the edge: origins and fates of gastropods with a labral tooth

Auteurs : Geerat J. Vermeij

Source :

RBID : ISTEX:FE118B0E392CA08ED63411241174C8BC27B10B15

English descriptors

Abstract

I combined data from the taxonomy, phytogeny, functional morphology, biogeography, and fossil record of gastropods to probe the origins, distribution, and fates of predatory gastropod clades characterized by the presence of a labral tooth, a downwardly projecting tooth or spine formed at the edge of the outer lip of the shell. A labral tooth occurs in at least 608 species, of which 251 are Recent. Studies of the type and position of the labral tooth, along with other characters, indicate that the labral tooth has evolved independently at least 58 times, beginning in the Campanian epoch of the late Cretaceous. The labral tooth plays a more or less active part in predation on relatively large prey animals that are protected by a hard skeleton. In the Recent fauna, tooth‐bearing species are overwhelmingly warm‐temperate to tropical in distribution (240 of 251 species; 96%). Within Muricidae (excluding Coralliophilinae), however, there is no discernible latitudinal gradient in the number of tooth‐bearing species relative to total regional diversity. First appearances of clades with a labral tooth are overwhelmingly concentrated in the late Oligocene to Pleistocene interval, with the largest number appearing during the early Miocene (12 clades). The temporal pattern differs significantly from that expected on the basis of the number of faunas available per time interval, and is therefore not an artifact of sampling or fossil preservation. The most consistent factor associated with, and permitting the repeated evolution of, the labral tooth is high planktonic primary productivity. Two factors may account for the link between primary productivity and the evolution of labral téeth: (1) the general economic opportunity afforded by ready availability of an access to nutrients, and (2) the greater abundance and sizes range of available suspension‐féeding prey animals. Incumbency–the presence of already well‐adapted species–often controls evolutionary opportunity. The complementary distributions of major tooth‐bearing clades in many parts of the world point to the role of well‐adapted incumbents in limiting the adaptive exploration by other clades that could in principle evolve a labral tooth. The elimination of incumbents by extinction, however, does not provide opportunities for other clades to fill the adaptive void.

Url:
DOI: 10.1111/j.1095-8312.2001.tb01333.x

Links to Exploration step

ISTEX:FE118B0E392CA08ED63411241174C8BC27B10B15

Le document en format XML

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<term>Absolute numbers</term>
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<term>Acanthina</term>
<term>Acanthina clade</term>
<term>Acanthinucella</term>
<term>Acantholabia</term>
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<term>Allmon</term>
<term>Amano</term>
<term>Amano vermeij</term>
<term>American paleontology</term>
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<term>Ancillines</term>
<term>Attiliosa</term>
<term>Axial</term>
<term>Axial ribs</term>
<term>Axial sculpture</term>
<term>Barnacle</term>
<term>Basal</term>
<term>Basal constriction</term>
<term>Basal groove</term>
<term>Beet</term>
<term>Bellardi</term>
<term>Benimakia</term>
<term>Benthobia</term>
<term>Biogeography</term>
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<term>Bouchet</term>
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<term>Hexaplex clade</term>
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<term>Inermicosta</term>
<term>Inner side</term>
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<term>Jablonski</term>
<term>Jaton</term>
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<term>Kilburn</term>
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<term>Labral tooth</term>
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<term>Late eocene</term>
<term>Late miocene</term>
<term>Late oligocene</term>
<term>Late pleistocene</term>
<term>Late pliocene</term>
<term>Leucozonia</term>
<term>Lozouet</term>
<term>Maastrichtian</term>
<term>Macron</term>
<term>Mancinella</term>
<term>Marko</term>
<term>Marko vermeij</term>
<term>Medially</term>
<term>Mexacanthina</term>
<term>Micmrhytis</term>
<term>Micmrhytis clade</term>
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<term>Middle miocene</term>
<term>Middle pliocene</term>
<term>Miocene</term>
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<term>Mollusca</term>
<term>Molluscan</term>
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<term>Muricids</term>
<term>Muricine</term>
<term>Nassariidae</term>
<term>Natural history</term>
<term>Naturelles</term>
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<term>Neogene</term>
<term>Neorapana</term>
<term>Node</term>
<term>Northeastern</term>
<term>Nucella</term>
<term>Oceanic</term>
<term>Ocenebra</term>
<term>Ocenebrinae</term>
<term>Ocenebrine</term>
<term>Ocenebrines</term>
<term>Ocinebrellus</term>
<term>Ocinebrina</term>
<term>Ocinebrina clade</term>
<term>Odontobasis</term>
<term>Oligocene</term>
<term>Olividae</term>
<term>Opeatostoma</term>
<term>Other clades</term>
<term>Other members</term>
<term>Other species</term>
<term>Pacaud</term>
<term>Pacific species</term>
<term>Packi</term>
<term>Paleobiology</term>
<term>Paleocene</term>
<term>Paleogene</term>
<term>Paleontology</term>
<term>Panamurex</term>
<term>Parietal</term>
<term>Pers</term>
<term>Petuch</term>
<term>Phylogenetic</term>
<term>Phylogenetic analysis</term>
<term>Phylogeny</term>
<term>Planktonic</term>
<term>Pleistocene</term>
<term>Plesiomorphic</term>
<term>Pliocene</term>
<term>Pollia</term>
<term>Preangeria</term>
<term>Predation</term>
<term>Predator</term>
<term>Predatory</term>
<term>Predatory gastropods</term>
<term>Protobusycon</term>
<term>Pseudolividae</term>
<term>Pseudolivids</term>
<term>Quaternary</term>
<term>Rapaninae</term>
<term>Rapanine</term>
<term>Recent fauna</term>
<term>Recent species</term>
<term>Reeve</term>
<term>Rib</term>
<term>Riedel</term>
<term>Scripta</term>
<term>Scripta geologica</term>
<term>Siphonal</term>
<term>Siphonal canal</term>
<term>Sister group</term>
<term>Small labral tooth</term>
<term>Sohl</term>
<term>Southern africa</term>
<term>Southern europe</term>
<term>Sowerby</term>
<term>Spinucella</term>
<term>Spiral cords</term>
<term>Spiral sculpture</term>
<term>Squamosa</term>
<term>Stratigraphic</term>
<term>Subfamily</term>
<term>Subgenus</term>
<term>Sulcobuccinum</term>
<term>Systematics</term>
<term>Taxon</term>
<term>Taxonomic</term>
<term>Taxonomy</term>
<term>Tertiary</term>
<term>Thais clade</term>
<term>Tooth</term>
<term>Toothbearing</term>
<term>Toothless</term>
<term>Trivaricate</term>
<term>Tropical america</term>
<term>Turbinellidae</term>
<term>Type species</term>
<term>Varix</term>
<term>Veliger</term>
<term>Ventrally</term>
<term>Vermeij</term>
<term>Vermeij carlson</term>
<term>Vermeij houart</term>
<term>Vermeij vokes</term>
<term>Vokes</term>
<term>West africa</term>
<term>Western atlantic</term>
<term>Whorl</term>
<term>Zealand</term>
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<term>2ooo</term>
<term>Abapical</term>
<term>Abapical sector</term>
<term>Absolute numbers</term>
<term>Acanthais</term>
<term>Acanthina</term>
<term>Acanthina clade</term>
<term>Acanthinucella</term>
<term>Acantholabia</term>
<term>Adapical</term>
<term>Allmon</term>
<term>Amano</term>
<term>Amano vermeij</term>
<term>American paleontology</term>
<term>Ancillinae</term>
<term>Ancillines</term>
<term>Attiliosa</term>
<term>Axial</term>
<term>Axial ribs</term>
<term>Axial sculpture</term>
<term>Barnacle</term>
<term>Basal</term>
<term>Basal constriction</term>
<term>Basal groove</term>
<term>Beet</term>
<term>Bellardi</term>
<term>Benimakia</term>
<term>Benthobia</term>
<term>Biogeography</term>
<term>Bivalve</term>
<term>Bouchet</term>
<term>Broad sense</term>
<term>Buccinid</term>
<term>Buccinidae</term>
<term>Buccinids</term>
<term>Buccinopsis</term>
<term>Buccinum</term>
<term>Burdigalian</term>
<term>Campanian</term>
<term>Cantharus</term>
<term>Cantharus clade</term>
<term>Cenozoic</term>
<term>Ceratostoma</term>
<term>Cernohorsky</term>
<term>Chicoreus</term>
<term>Clade</term>
<term>Colorata</term>
<term>Columbarium</term>
<term>Columellar</term>
<term>Cominella</term>
<term>Comm</term>
<term>Concholepas</term>
<term>Cornulina</term>
<term>Cossmann</term>
<term>Cretaceous</term>
<term>Darragh</term>
<term>Dennantia</term>
<term>Denticle</term>
<term>Devries</term>
<term>Early eocene</term>
<term>Early miocene</term>
<term>Early oligocene</term>
<term>Early pleistocene</term>
<term>Early pliocene</term>
<term>East borneo</term>
<term>Eastern atlantic</term>
<term>Editharus</term>
<term>Eocene</term>
<term>Extinction</term>
<term>Fasciolariid</term>
<term>Fasciolariidae</term>
<term>Fasciolariids</term>
<term>Fauna</term>
<term>First appearance</term>
<term>First appearances</term>
<term>Forreria</term>
<term>Fossil</term>
<term>Fossil record</term>
<term>Fossil species</term>
<term>Fusulculus</term>
<term>Gastropod</term>
<term>Gastropod labral teeth</term>
<term>Gastropoda</term>
<term>Genus</term>
<term>Geologica</term>
<term>Gmelin</term>
<term>Groove</term>
<term>Hadriania</term>
<term>Hebra</term>
<term>Hebra clade</term>
<term>Herminespina</term>
<term>Hexaplex</term>
<term>Hexaplex clade</term>
<term>Houart</term>
<term>Inermicosta</term>
<term>Inner side</term>
<term>Intertidal</term>
<term>Iosepha</term>
<term>Jablonski</term>
<term>Jaton</term>
<term>Kantor</term>
<term>Kensley</term>
<term>Kilburn</term>
<term>Labral</term>
<term>Labral teeth</term>
<term>Labral tooth</term>
<term>Lamarck</term>
<term>Lane studies</term>
<term>Last whorl</term>
<term>Late cretaceous</term>
<term>Late eocene</term>
<term>Late miocene</term>
<term>Late oligocene</term>
<term>Late pleistocene</term>
<term>Late pliocene</term>
<term>Leucozonia</term>
<term>Lozouet</term>
<term>Maastrichtian</term>
<term>Macron</term>
<term>Mancinella</term>
<term>Marko</term>
<term>Marko vermeij</term>
<term>Medially</term>
<term>Mexacanthina</term>
<term>Micmrhytis</term>
<term>Micmrhytis clade</term>
<term>Middle eocene</term>
<term>Middle miocene</term>
<term>Middle pliocene</term>
<term>Miocene</term>
<term>Mollusc</term>
<term>Mollusca</term>
<term>Molluscan</term>
<term>Mollusk</term>
<term>Mollusques</term>
<term>More species</term>
<term>Morphologically</term>
<term>Muregina</term>
<term>Murex</term>
<term>Muricanthus</term>
<term>Muricid</term>
<term>Muricidae</term>
<term>Muricids</term>
<term>Muricine</term>
<term>Nassariidae</term>
<term>Natural history</term>
<term>Naturelles</term>
<term>Neogastropoda</term>
<term>Neogene</term>
<term>Neorapana</term>
<term>Node</term>
<term>Northeastern</term>
<term>Nucella</term>
<term>Oceanic</term>
<term>Ocenebra</term>
<term>Ocenebrinae</term>
<term>Ocenebrine</term>
<term>Ocenebrines</term>
<term>Ocinebrellus</term>
<term>Ocinebrina</term>
<term>Ocinebrina clade</term>
<term>Odontobasis</term>
<term>Oligocene</term>
<term>Olividae</term>
<term>Opeatostoma</term>
<term>Other clades</term>
<term>Other members</term>
<term>Other species</term>
<term>Pacaud</term>
<term>Pacific species</term>
<term>Packi</term>
<term>Paleobiology</term>
<term>Paleocene</term>
<term>Paleogene</term>
<term>Paleontology</term>
<term>Panamurex</term>
<term>Parietal</term>
<term>Pers</term>
<term>Petuch</term>
<term>Phylogenetic</term>
<term>Phylogenetic analysis</term>
<term>Phylogeny</term>
<term>Planktonic</term>
<term>Pleistocene</term>
<term>Plesiomorphic</term>
<term>Pliocene</term>
<term>Pollia</term>
<term>Preangeria</term>
<term>Predation</term>
<term>Predator</term>
<term>Predatory</term>
<term>Predatory gastropods</term>
<term>Protobusycon</term>
<term>Pseudolividae</term>
<term>Pseudolivids</term>
<term>Quaternary</term>
<term>Rapaninae</term>
<term>Rapanine</term>
<term>Recent fauna</term>
<term>Recent species</term>
<term>Reeve</term>
<term>Rib</term>
<term>Riedel</term>
<term>Scripta</term>
<term>Scripta geologica</term>
<term>Siphonal</term>
<term>Siphonal canal</term>
<term>Sister group</term>
<term>Small labral tooth</term>
<term>Sohl</term>
<term>Southern africa</term>
<term>Southern europe</term>
<term>Sowerby</term>
<term>Spinucella</term>
<term>Spiral cords</term>
<term>Spiral sculpture</term>
<term>Squamosa</term>
<term>Stratigraphic</term>
<term>Subfamily</term>
<term>Subgenus</term>
<term>Sulcobuccinum</term>
<term>Systematics</term>
<term>Taxon</term>
<term>Taxonomic</term>
<term>Taxonomy</term>
<term>Tertiary</term>
<term>Thais clade</term>
<term>Tooth</term>
<term>Toothbearing</term>
<term>Toothless</term>
<term>Trivaricate</term>
<term>Tropical america</term>
<term>Turbinellidae</term>
<term>Type species</term>
<term>Varix</term>
<term>Veliger</term>
<term>Ventrally</term>
<term>Vermeij</term>
<term>Vermeij carlson</term>
<term>Vermeij houart</term>
<term>Vermeij vokes</term>
<term>Vokes</term>
<term>West africa</term>
<term>Western atlantic</term>
<term>Whorl</term>
<term>Zealand</term>
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<front>
<div type="abstract" xml:lang="en">I combined data from the taxonomy, phytogeny, functional morphology, biogeography, and fossil record of gastropods to probe the origins, distribution, and fates of predatory gastropod clades characterized by the presence of a labral tooth, a downwardly projecting tooth or spine formed at the edge of the outer lip of the shell. A labral tooth occurs in at least 608 species, of which 251 are Recent. Studies of the type and position of the labral tooth, along with other characters, indicate that the labral tooth has evolved independently at least 58 times, beginning in the Campanian epoch of the late Cretaceous. The labral tooth plays a more or less active part in predation on relatively large prey animals that are protected by a hard skeleton. In the Recent fauna, tooth‐bearing species are overwhelmingly warm‐temperate to tropical in distribution (240 of 251 species; 96%). Within Muricidae (excluding Coralliophilinae), however, there is no discernible latitudinal gradient in the number of tooth‐bearing species relative to total regional diversity. First appearances of clades with a labral tooth are overwhelmingly concentrated in the late Oligocene to Pleistocene interval, with the largest number appearing during the early Miocene (12 clades). The temporal pattern differs significantly from that expected on the basis of the number of faunas available per time interval, and is therefore not an artifact of sampling or fossil preservation. The most consistent factor associated with, and permitting the repeated evolution of, the labral tooth is high planktonic primary productivity. Two factors may account for the link between primary productivity and the evolution of labral téeth: (1) the general economic opportunity afforded by ready availability of an access to nutrients, and (2) the greater abundance and sizes range of available suspension‐féeding prey animals. Incumbency–the presence of already well‐adapted species–often controls evolutionary opportunity. The complementary distributions of major tooth‐bearing clades in many parts of the world point to the role of well‐adapted incumbents in limiting the adaptive exploration by other clades that could in principle evolve a labral tooth. The elimination of incumbents by extinction, however, does not provide opportunities for other clades to fill the adaptive void.</div>
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<json:string>sowerby</json:string>
<json:string>rib</json:string>
<json:string>cominella</json:string>
<json:string>hebra</json:string>
<json:string>cantharus clade</json:string>
<json:string>beet</json:string>
<json:string>fasciolariids</json:string>
<json:string>buccinids</json:string>
<json:string>packi</json:string>
<json:string>plesiomorphic</json:string>
<json:string>opeatostoma</json:string>
<json:string>gastropod labral teeth</json:string>
<json:string>allmon</json:string>
<json:string>preangeria</json:string>
<json:string>rapaninae</json:string>
<json:string>vermeij carlson</json:string>
<json:string>reeve</json:string>
<json:string>rapanine</json:string>
<json:string>campanian</json:string>
<json:string>tooth</json:string>
<json:string>hadriania</json:string>
<json:string>mollusc</json:string>
<json:string>macron</json:string>
<json:string>recent species</json:string>
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<json:string>ventrally</json:string>
<json:string>subfamily</json:string>
<json:string>acanthais</json:string>
<json:string>fasciolariidae</json:string>
<json:string>pollia</json:string>
<json:string>oceanic</json:string>
<json:string>american paleontology</json:string>
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<json:string>ocenebrinae</json:string>
<json:string>bellardi</json:string>
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<json:string>west africa</json:string>
<json:string>columellar</json:string>
<json:string>ocenebra</json:string>
<json:string>southern africa</json:string>
<json:string>inermicosta</json:string>
<json:string>buccinum</json:string>
<json:string>cernohorsky</json:string>
<json:string>marko vermeij</json:string>
<json:string>nassariidae</json:string>
<json:string>kilburn</json:string>
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<json:string>eastern atlantic</json:string>
<json:string>basal constriction</json:string>
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<json:string>basal groove</json:string>
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<json:string>baja california</json:string>
<json:string>quaternary geology</json:string>
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<json:string>western atlantic region part</json:string>
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<json:string>vermeij bouchet</json:string>
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<json:string>cape verde islands</json:string>
<json:string>chicago press</json:string>
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<json:string>many times</json:string>
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<json:string>belgrade formation</json:string>
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<json:string>concave base</json:string>
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<json:string>shoulder angulation</json:string>
<json:string>open siphonal canal</json:string>
<json:string>hunter jernvall</json:string>
<json:string>growth stages</json:string>
<json:string>species lack</json:string>
<json:string>western australia</json:string>
<json:string>primary spines</json:string>
<json:string>abapical sectors</json:string>
<json:string>trivaricate condition</json:string>
<json:string>systematic zoology</json:string>
<json:string>primary productivity</json:string>
<json:string>continental margins</json:string>
<json:string>southern japan</json:string>
<json:string>earliest miocene</json:string>
<json:string>marine biology</json:string>
<json:string>marine science</json:string>
<json:string>ocinebrina circumtexta</json:string>
<json:string>intervarical node</json:string>
<json:string>southern california</json:string>
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<json:string>spine</json:string>
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<author>
<json:item>
<name>GEERAT J. VERMEIJ</name>
<affiliations>
<json:string>Department of Geology, University of California at Davis, One Shields Avenue, Davis, CA 95616, USA</json:string>
<json:string>E-mail: vermeij@geology.ucdavis.edu</json:string>
</affiliations>
</json:item>
</author>
<subject>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>labral tooth</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>innovation</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>productivity</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>Neogene</value>
</json:item>
<json:item>
<lang>
<json:string>eng</json:string>
</lang>
<value>Gastropoda</value>
</json:item>
</subject>
<articleId>
<json:string>BIJ461</json:string>
</articleId>
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<json:string>eng</json:string>
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<abstract>I combined data from the taxonomy, phytogeny, functional morphology, biogeography, and fossil record of gastropods to probe the origins, distribution, and fates of predatory gastropod clades characterized by the presence of a labral tooth, a downwardly projecting tooth or spine formed at the edge of the outer lip of the shell. A labral tooth occurs in at least 608 species, of which 251 are Recent. Studies of the type and position of the labral tooth, along with other characters, indicate that the labral tooth has evolved independently at least 58 times, beginning in the Campanian epoch of the late Cretaceous. The labral tooth plays a more or less active part in predation on relatively large prey animals that are protected by a hard skeleton. In the Recent fauna, tooth‐bearing species are overwhelmingly warm‐temperate to tropical in distribution (240 of 251 species; 96%). Within Muricidae (excluding Coralliophilinae), however, there is no discernible latitudinal gradient in the number of tooth‐bearing species relative to total regional diversity. First appearances of clades with a labral tooth are overwhelmingly concentrated in the late Oligocene to Pleistocene interval, with the largest number appearing during the early Miocene (12 clades). The temporal pattern differs significantly from that expected on the basis of the number of faunas available per time interval, and is therefore not an artifact of sampling or fossil preservation. The most consistent factor associated with, and permitting the repeated evolution of, the labral tooth is high planktonic primary productivity. Two factors may account for the link between primary productivity and the evolution of labral téeth: (1) the general economic opportunity afforded by ready availability of an access to nutrients, and (2) the greater abundance and sizes range of available suspension‐féeding prey animals. Incumbency–the presence of already well‐adapted species–often controls evolutionary opportunity. The complementary distributions of major tooth‐bearing clades in many parts of the world point to the role of well‐adapted incumbents in limiting the adaptive exploration by other clades that could in principle evolve a labral tooth. The elimination of incumbents by extinction, however, does not provide opportunities for other clades to fill the adaptive void.</abstract>
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<title>Innovation and evolution at the edge: origins and fates of gastropods with a labral tooth</title>
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<json:string>article</json:string>
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<title>Biological Journal of the Linnean Society</title>
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<doi>
<json:string>10.1111/(ISSN)1095-8312</json:string>
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<issn>
<json:string>0024-4066</json:string>
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<eissn>
<json:string>1095-8312</json:string>
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<json:string>BIJ</json:string>
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<volume>72</volume>
<issue>4</issue>
<pages>
<first>461</first>
<last>508</last>
<total>48</total>
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<date>
<json:string>1860</json:string>
<json:string>2001</json:string>
<json:string>1740</json:string>
<json:string>1980</json:string>
</date>
<geogName>
<json:string>Creek Formation</json:string>
<json:string>Tampa Limestone</json:string>
<json:string>Suwannee Limestone</json:string>
<json:string>Tuamotu Islands Marquesas Islands Easter Island Hawaiian Islands Henderson Island</json:string>
<json:string>San</json:string>
<json:string>Indo-West Pacific region</json:string>
<json:string>Island Kaiatan</json:string>
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<orgName>
<json:string>Dominican Republic Gatun Formation, Panama Entreriense Formation, Argentina</json:string>
<json:string>Germany Egerian, Hungary Aquitaine Basin, France</json:string>
<json:string>Japan Virginia Maine Southern Norway</json:string>
<json:string>Argentina Kerguelen Island</json:string>
<json:string>New Zealand, Harounian</json:string>
<json:string>Italy Kostej, Rumania Pliocene Oorderen Member, Lillo Formation, Belgium Kruisschans Member, Lillo Formation, Belgium</json:string>
<json:string>Japan Pleistocene</json:string>
<json:string>Australia, New Zealand</json:string>
<json:string>Australia, New Zealand, and the North Pacific</json:string>
<json:string>New Guinea, the Philippines, and Indonesia</json:string>
<json:string>West Africa Angola, Subtropical West Africa Senegal</json:string>
<json:string>South Africa Golfo</json:string>
<json:string>Australia and New Zealand</json:string>
<json:string>New Zealand Otaian Stage, New Zealand Altonian Stage, New Zealand Pliocene Mangapanian Stage, New Zealand Nukumaruan Stage, New Zealand</json:string>
<json:string>Philippines North Queensland, Australia Southern Japan Eastern Arabian Peninsula Recent</json:string>
<json:string>Chile Cape Province, South Africa Pleistocene Castlecliffian Stage, New Zealand Haweran Stage, New Zealand Recent South Australia North Island, New Zealand South Island, New Zealand</json:string>
<json:string>New Zealand, and the North Pacific</json:string>
<json:string>Ecuador Recent</json:string>
<json:string>Germany Etampes, France</json:string>
<json:string>Cape Verde Islands</json:string>
<json:string>Brazil Recent</json:string>
<json:string>Venezuela and the Pinecrest</json:string>
<json:string>Mariana Islands Palau Islands</json:string>
<json:string>Brazil Trindade, Brazil</json:string>
<json:string>India, Indonesia, the Philippines</json:string>
<json:string>University of California</json:string>
<json:string>France Paris Basin, France</json:string>
<json:string>France Ameki Formation, Nigeria</json:string>
<json:string>South Africa and New Zealand</json:string>
<json:string>Philippines Recent</json:string>
<json:string>France Ewekoro Formation, Nigeria</json:string>
<json:string>France Loire-Inferieure, France</json:string>
<json:string>Bonaire Greater Antilles Venezuela Amapa</json:string>
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<json:string>F. Wesselingh</json:string>
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<json:string>Zullo, 1984, 1992</json:string>
<json:string>Paine, 1962</json:string>
<json:string>some Eocene species of Sub cobuccinum; see Vermeij, 1998a</json:string>
<json:string>Kent, 1981</json:string>
<json:string>the buccinids Pollia fumosa and l? undosa and the fasciolariid Opeatostoma pseudodon; see Taylor, 1984</json:string>
<json:string>West-Eberhard, 1983</json:string>
<json:string>DeVries (1997)</json:string>
<json:string>note 57; see also Michaux, 1989, 1991</json:string>
<json:string>Stanley, 1986</json:string>
<json:string>Birkeland, 1989</json:string>
<json:string>Foote, 1997</json:string>
<json:string>Beu & Maxwell, 1990</json:string>
<json:string>Vermeij, 1990</json:string>
<json:string>Buss, 1987</json:string>
<json:string>Jernvall, 2000</json:string>
<json:string>Maynard Smith & Szathmary, 1999</json:string>
<json:string>Saul & Popenoe, 1993</json:string>
<json:string>Venneij & Lindberg, 2000</json:string>
<json:string>Nielsen, 1975</json:string>
<json:string>Waller, 1991</json:string>
<json:string>Vermeij, 199613</json:string>
<json:string>Signor & Vermeij, 1994</json:string>
<json:string>Tracey & Todd, 1996</json:string>
<json:string>Allmon, 1996</json:string>
<json:string>Vermeij, 1978</json:string>
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<json:string>Jablonski, 1993</json:string>
<json:string>Riedel, 1995</json:string>
<json:string>Lozouet, 1992</json:string>
<json:string>Arthur, 1989</json:string>
<json:string>Paine, 1966</json:string>
<json:string>see Vermeij, 199813</json:string>
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<json:string>Smith, 1991</json:string>
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<json:string>Vermeij, 1987a</json:string>
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<json:string>DiMichele (1994)</json:string>
<json:string>Haasl, 2000</json:string>
<json:string>Sleder (1981)</json:string>
<json:string>see also Vermeij, 1987a, 1995</json:string>
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<json:string>Taylor (1997)</json:string>
<json:string>Kirby, 2000</json:string>
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<json:string>two early Miocene species of Lyria; see Hoerle & Vokes, 1978</json:string>
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<p>I combined data from the taxonomy, phytogeny, functional morphology, biogeography, and fossil record of gastropods to probe the origins, distribution, and fates of predatory gastropod clades characterized by the presence of a labral tooth, a downwardly projecting tooth or spine formed at the edge of the outer lip of the shell. A labral tooth occurs in at least 608 species, of which 251 are Recent. Studies of the type and position of the labral tooth, along with other characters, indicate that the labral tooth has evolved independently at least 58 times, beginning in the Campanian epoch of the late Cretaceous. The labral tooth plays a more or less active part in predation on relatively large prey animals that are protected by a hard skeleton. In the Recent fauna, tooth‐bearing species are overwhelmingly warm‐temperate to tropical in distribution (240 of 251 species; 96%). Within Muricidae (excluding Coralliophilinae), however, there is no discernible latitudinal gradient in the number of tooth‐bearing species relative to total regional diversity. First appearances of clades with a labral tooth are overwhelmingly concentrated in the late Oligocene to Pleistocene interval, with the largest number appearing during the early Miocene (12 clades). The temporal pattern differs significantly from that expected on the basis of the number of faunas available per time interval, and is therefore not an artifact of sampling or fossil preservation. The most consistent factor associated with, and permitting the repeated evolution of, the labral tooth is high planktonic primary productivity. Two factors may account for the link between primary productivity and the evolution of labral téeth: (1) the general economic opportunity afforded by ready availability of an access to nutrients, and (2) the greater abundance and sizes range of available suspension‐féeding prey animals. Incumbency–the presence of already well‐adapted species–often controls evolutionary opportunity. The complementary distributions of major tooth‐bearing clades in many parts of the world point to the role of well‐adapted incumbents in limiting the adaptive exploration by other clades that could in principle evolve a labral tooth. The elimination of incumbents by extinction, however, does not provide opportunities for other clades to fill the adaptive void.</p>
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<abstract lang="en">I combined data from the taxonomy, phytogeny, functional morphology, biogeography, and fossil record of gastropods to probe the origins, distribution, and fates of predatory gastropod clades characterized by the presence of a labral tooth, a downwardly projecting tooth or spine formed at the edge of the outer lip of the shell. A labral tooth occurs in at least 608 species, of which 251 are Recent. Studies of the type and position of the labral tooth, along with other characters, indicate that the labral tooth has evolved independently at least 58 times, beginning in the Campanian epoch of the late Cretaceous. The labral tooth plays a more or less active part in predation on relatively large prey animals that are protected by a hard skeleton. In the Recent fauna, tooth‐bearing species are overwhelmingly warm‐temperate to tropical in distribution (240 of 251 species; 96%). Within Muricidae (excluding Coralliophilinae), however, there is no discernible latitudinal gradient in the number of tooth‐bearing species relative to total regional diversity. First appearances of clades with a labral tooth are overwhelmingly concentrated in the late Oligocene to Pleistocene interval, with the largest number appearing during the early Miocene (12 clades). The temporal pattern differs significantly from that expected on the basis of the number of faunas available per time interval, and is therefore not an artifact of sampling or fossil preservation. The most consistent factor associated with, and permitting the repeated evolution of, the labral tooth is high planktonic primary productivity. Two factors may account for the link between primary productivity and the evolution of labral téeth: (1) the general economic opportunity afforded by ready availability of an access to nutrients, and (2) the greater abundance and sizes range of available suspension‐féeding prey animals. Incumbency–the presence of already well‐adapted species–often controls evolutionary opportunity. The complementary distributions of major tooth‐bearing clades in many parts of the world point to the role of well‐adapted incumbents in limiting the adaptive exploration by other clades that could in principle evolve a labral tooth. The elimination of incumbents by extinction, however, does not provide opportunities for other clades to fill the adaptive void.</abstract>
<subject lang="en">
<genre>keywords</genre>
<topic>labral tooth</topic>
<topic>innovation</topic>
<topic>productivity</topic>
<topic>Neogene</topic>
<topic>Gastropoda</topic>
</subject>
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<title>Biological Journal of the Linnean Society</title>
</titleInfo>
<genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre>
<identifier type="ISSN">0024-4066</identifier>
<identifier type="eISSN">1095-8312</identifier>
<identifier type="DOI">10.1111/(ISSN)1095-8312</identifier>
<identifier type="PublisherID">BIJ</identifier>
<part>
<date>2001</date>
<detail type="volume">
<caption>vol.</caption>
<number>72</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>4</number>
</detail>
<extent unit="pages">
<start>461</start>
<end>508</end>
<total>48</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">FE118B0E392CA08ED63411241174C8BC27B10B15</identifier>
<identifier type="ark">ark:/67375/WNG-QD5C4T2P-Z</identifier>
<identifier type="DOI">10.1111/j.1095-8312.2001.tb01333.x</identifier>
<identifier type="ArticleID">BIJ461</identifier>
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<recordOrigin>Blackwell Publishing Ltd</recordOrigin>
</recordInfo>
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   |texte=   Innovation and evolution at the edge: origins and fates of gastropods with a labral tooth
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