The phylogenetic position of Isalorhynchus genovefae , a Late Triassic rhynchosaur from Madagascar
Identifieur interne : 000332 ( France/Analysis ); précédent : 000331; suivant : 000333The phylogenetic position of Isalorhynchus genovefae , a Late Triassic rhynchosaur from Madagascar
Auteurs : Max Langer [Royaume-Uni] ; Michael Boniface [Royaume-Uni] ; Gilles Cuny [Royaume-Uni] ; Laurent Barbieri [France]Source :
- Annales de paleontologie [ 0753-3969 ] ; 2000.
Descripteurs français
- Wicri :
- geographic : Madagascar.
- topic : Reptile.
English descriptors
- KwdEn :
- Articular, Articular facet, Astragalus, Benton, Buffetaut, Centrale, Conical, Conical teeth, Dentary, Dentary blade, Droit, Facet, Facette articulaire, Fauna, Genovefae, Genus hyperodapedon, Geol, Gordoni, Groove, Holotype, Huene, Huenei, Huxleyi, Hyperodapedon, Hyperodapedon gordoni, Hyperodapedon huenei, Hyperodupedon, Hyperodupedon gordoni, Hyperodupedon huxley, Isalorhynchus, Isalorhynchus genovefae, Lancer, Langer, Late triassic, Late triassic forms, Late triassic rhynchosaur, Late triassic rhynchosaurs, Lateral, Lateral area, Lateral maxillary area, Lingual, Lingual surface, Lingual teeth, Longitudinal, Longitudinal rows, Longitudinal tooth rows, Madagascar, Main groove, Makay, Makay formation, Malio, Malio river, Malio river area, Maxilla, Maxillaire, Maxillaire droit, Maxillary, Maxillary area, Maxillary fragments, Maxillary groove, Maxillary grooves, Maxillary lingual teeth, Medial, Medial area, Medial dentary blade, Middle triassic rhynchosaurs, Morondava, Morondava basin, Other hand, Other triassic rhynchosaurs, Palaeontology, Parsimony analysis, Permian, Phylogenetic, Phylogenetic position, Primary lingual teeth, Pyramidal, Pyramidal teeth, Reptile, Reptilia, Rhynchosaur, Rhynchosaures, Rhynchosaurs, Rhynchosaurus, Right maxilla, Sanjuanensis, Scaphonyx, Schultz, Scuphonyx, Single dentary blade, Sister taxon, Stenaulorhynchus, Sulcognathus, Taxon, Tetrapod, Tooth evolution, Tooth rows, Transformation series, Trias, Trias moyen, Triassic, Triassic rhynchosaurs, Upper permian, Ventral, Ventral surface, Ventral view, Ventrale, Zsalorhynchus.
- Teeft :
- Articular, Articular facet, Astragalus, Benton, Buffetaut, Centrale, Conical, Conical teeth, Dentary, Dentary blade, Droit, Facet, Facette articulaire, Fauna, Genovefae, Genus hyperodapedon, Geol, Gordoni, Groove, Holotype, Huene, Huenei, Huxleyi, Hyperodapedon, Hyperodapedon gordoni, Hyperodapedon huenei, Hyperodupedon, Hyperodupedon gordoni, Hyperodupedon huxley, Isalorhynchus, Isalorhynchus genovefae, Lancer, Langer, Late triassic, Late triassic forms, Late triassic rhynchosaur, Late triassic rhynchosaurs, Lateral, Lateral area, Lateral maxillary area, Lingual, Lingual surface, Lingual teeth, Longitudinal, Longitudinal rows, Longitudinal tooth rows, Madagascar, Main groove, Makay, Makay formation, Malio, Malio river, Malio river area, Maxilla, Maxillaire, Maxillaire droit, Maxillary, Maxillary area, Maxillary fragments, Maxillary groove, Maxillary grooves, Maxillary lingual teeth, Medial, Medial area, Medial dentary blade, Middle triassic rhynchosaurs, Morondava, Morondava basin, Other hand, Other triassic rhynchosaurs, Palaeontology, Parsimony analysis, Permian, Phylogenetic, Phylogenetic position, Primary lingual teeth, Pyramidal, Pyramidal teeth, Reptile, Reptilia, Rhynchosaur, Rhynchosaures, Rhynchosaurs, Rhynchosaurus, Right maxilla, Sanjuanensis, Scaphonyx, Schultz, Scuphonyx, Single dentary blade, Sister taxon, Stenaulorhynchus, Sulcognathus, Taxon, Tetrapod, Tooth evolution, Tooth rows, Transformation series, Trias, Trias moyen, Triassic, Triassic rhynchosaurs, Upper permian, Ventral, Ventral surface, Ventral view, Ventrale, Zsalorhynchus.
Abstract
Abstract: New specimens of the rhynchosaur Isalorhynchus genovefae Buffetaut, 1983, have been found in the Makay Formation (Late Triassic of the Morondava Basin), Malio River area, southwest Madagascar. The material includes several maxillae as well as the first known rhynchosaur dentaries from the region. The maxilla bears a single longitudinal groove, with fewer than three longitudinal tooth rows both medial and lateral to it. The dentary possesses a single blade, with an additional row of teeth on its lingual surface. A phylogenetic study, based on the morphological features possible to measure for Isalorhynchus, as well as on previous cladistic analysis of Rhynchosauria, showed that the Malagasian rhynchosaur is nested within the genus Hyperodapedon, and a new combination — H. genovefae — is proposed. The phylogenetic study also depicts clear trends in the tooth evolution of Late Triassic rhynchosaurs, with the reduction of the medial structures in relation to the lateral ones, in both maxilla and dentary.
Url:
DOI: 10.1016/S0753-3969(00)80002-6
Affiliations:
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Madagascar</title><author><name sortKey="Langer, Max" sort="Langer, Max" uniqKey="Langer M" first="Max" last="Langer">Max Langer</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, BS8 ILL Bristol</wicri:regionArea><wicri:noRegion>BS8 ILL Bristol</wicri:noRegion></affiliation><affiliation></affiliation></author><author><name sortKey="Boniface, Michael" sort="Boniface, Michael" uniqKey="Boniface M" first="Michael" last="Boniface">Michael Boniface</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, BS8 ILL Bristol</wicri:regionArea><wicri:noRegion>BS8 ILL Bristol</wicri:noRegion></affiliation></author><author><name sortKey="Cuny, Gilles" sort="Cuny, Gilles" uniqKey="Cuny G" first="Gilles" last="Cuny">Gilles Cuny</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, BS8 ILL Bristol</wicri:regionArea><wicri:noRegion>BS8 ILL Bristol</wicri:noRegion></affiliation></author><author><name sortKey="Barbieri, Laurent" sort="Barbieri, Laurent" uniqKey="Barbieri L" first="Laurent" last="Barbieri">Laurent Barbieri</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>2, rue Saint-Charles, 78000 Versailles</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Versailles</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Annales de paleontologie</title><title level="j" type="abbrev">ANNPAL</title><idno type="ISSN">0753-3969</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="2000">2000</date><biblScope unit="volume">86</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="101">101</biblScope><biblScope unit="page" to="127">127</biblScope></imprint><idno type="ISSN">0753-3969</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0753-3969</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Articular</term><term>Articular facet</term><term>Astragalus</term><term>Benton</term><term>Buffetaut</term><term>Centrale</term><term>Conical</term><term>Conical teeth</term><term>Dentary</term><term>Dentary blade</term><term>Droit</term><term>Facet</term><term>Facette articulaire</term><term>Fauna</term><term>Genovefae</term><term>Genus hyperodapedon</term><term>Geol</term><term>Gordoni</term><term>Groove</term><term>Holotype</term><term>Huene</term><term>Huenei</term><term>Huxleyi</term><term>Hyperodapedon</term><term>Hyperodapedon gordoni</term><term>Hyperodapedon huenei</term><term>Hyperodupedon</term><term>Hyperodupedon gordoni</term><term>Hyperodupedon huxley</term><term>Isalorhynchus</term><term>Isalorhynchus genovefae</term><term>Lancer</term><term>Langer</term><term>Late triassic</term><term>Late triassic forms</term><term>Late triassic rhynchosaur</term><term>Late triassic rhynchosaurs</term><term>Lateral</term><term>Lateral area</term><term>Lateral maxillary area</term><term>Lingual</term><term>Lingual surface</term><term>Lingual teeth</term><term>Longitudinal</term><term>Longitudinal rows</term><term>Longitudinal tooth rows</term><term>Madagascar</term><term>Main groove</term><term>Makay</term><term>Makay formation</term><term>Malio</term><term>Malio river</term><term>Malio river area</term><term>Maxilla</term><term>Maxillaire</term><term>Maxillaire droit</term><term>Maxillary</term><term>Maxillary area</term><term>Maxillary fragments</term><term>Maxillary groove</term><term>Maxillary grooves</term><term>Maxillary lingual teeth</term><term>Medial</term><term>Medial area</term><term>Medial dentary blade</term><term>Middle triassic rhynchosaurs</term><term>Morondava</term><term>Morondava basin</term><term>Other hand</term><term>Other triassic rhynchosaurs</term><term>Palaeontology</term><term>Parsimony analysis</term><term>Permian</term><term>Phylogenetic</term><term>Phylogenetic position</term><term>Primary lingual teeth</term><term>Pyramidal</term><term>Pyramidal teeth</term><term>Reptile</term><term>Reptilia</term><term>Rhynchosaur</term><term>Rhynchosaures</term><term>Rhynchosaurs</term><term>Rhynchosaurus</term><term>Right maxilla</term><term>Sanjuanensis</term><term>Scaphonyx</term><term>Schultz</term><term>Scuphonyx</term><term>Single dentary blade</term><term>Sister taxon</term><term>Stenaulorhynchus</term><term>Sulcognathus</term><term>Taxon</term><term>Tetrapod</term><term>Tooth evolution</term><term>Tooth rows</term><term>Transformation series</term><term>Trias</term><term>Trias moyen</term><term>Triassic</term><term>Triassic rhynchosaurs</term><term>Upper permian</term><term>Ventral</term><term>Ventral surface</term><term>Ventral view</term><term>Ventrale</term><term>Zsalorhynchus</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Articular</term><term>Articular facet</term><term>Astragalus</term><term>Benton</term><term>Buffetaut</term><term>Centrale</term><term>Conical</term><term>Conical teeth</term><term>Dentary</term><term>Dentary blade</term><term>Droit</term><term>Facet</term><term>Facette articulaire</term><term>Fauna</term><term>Genovefae</term><term>Genus hyperodapedon</term><term>Geol</term><term>Gordoni</term><term>Groove</term><term>Holotype</term><term>Huene</term><term>Huenei</term><term>Huxleyi</term><term>Hyperodapedon</term><term>Hyperodapedon gordoni</term><term>Hyperodapedon huenei</term><term>Hyperodupedon</term><term>Hyperodupedon gordoni</term><term>Hyperodupedon huxley</term><term>Isalorhynchus</term><term>Isalorhynchus genovefae</term><term>Lancer</term><term>Langer</term><term>Late triassic</term><term>Late triassic forms</term><term>Late triassic rhynchosaur</term><term>Late triassic rhynchosaurs</term><term>Lateral</term><term>Lateral area</term><term>Lateral maxillary area</term><term>Lingual</term><term>Lingual surface</term><term>Lingual teeth</term><term>Longitudinal</term><term>Longitudinal rows</term><term>Longitudinal tooth rows</term><term>Madagascar</term><term>Main groove</term><term>Makay</term><term>Makay formation</term><term>Malio</term><term>Malio river</term><term>Malio river area</term><term>Maxilla</term><term>Maxillaire</term><term>Maxillaire droit</term><term>Maxillary</term><term>Maxillary area</term><term>Maxillary fragments</term><term>Maxillary groove</term><term>Maxillary grooves</term><term>Maxillary lingual teeth</term><term>Medial</term><term>Medial area</term><term>Medial dentary blade</term><term>Middle triassic rhynchosaurs</term><term>Morondava</term><term>Morondava basin</term><term>Other hand</term><term>Other triassic rhynchosaurs</term><term>Palaeontology</term><term>Parsimony analysis</term><term>Permian</term><term>Phylogenetic</term><term>Phylogenetic position</term><term>Primary lingual teeth</term><term>Pyramidal</term><term>Pyramidal teeth</term><term>Reptile</term><term>Reptilia</term><term>Rhynchosaur</term><term>Rhynchosaures</term><term>Rhynchosaurs</term><term>Rhynchosaurus</term><term>Right maxilla</term><term>Sanjuanensis</term><term>Scaphonyx</term><term>Schultz</term><term>Scuphonyx</term><term>Single dentary blade</term><term>Sister taxon</term><term>Stenaulorhynchus</term><term>Sulcognathus</term><term>Taxon</term><term>Tetrapod</term><term>Tooth evolution</term><term>Tooth rows</term><term>Transformation series</term><term>Trias</term><term>Trias moyen</term><term>Triassic</term><term>Triassic rhynchosaurs</term><term>Upper permian</term><term>Ventral</term><term>Ventral surface</term><term>Ventral view</term><term>Ventrale</term><term>Zsalorhynchus</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Madagascar</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Reptile</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: New specimens of the rhynchosaur Isalorhynchus genovefae Buffetaut, 1983, have been found in the Makay Formation (Late Triassic of the Morondava Basin), Malio River area, southwest Madagascar. The material includes several maxillae as well as the first known rhynchosaur dentaries from the region. The maxilla bears a single longitudinal groove, with fewer than three longitudinal tooth rows both medial and lateral to it. The dentary possesses a single blade, with an additional row of teeth on its lingual surface. A phylogenetic study, based on the morphological features possible to measure for Isalorhynchus, as well as on previous cladistic analysis of Rhynchosauria, showed that the Malagasian rhynchosaur is nested within the genus Hyperodapedon, and a new combination — H. genovefae — is proposed. The phylogenetic study also depicts clear trends in the tooth evolution of Late Triassic rhynchosaurs, with the reduction of the medial structures in relation to the lateral ones, in both maxilla and dentary.</div></front></TEI><affiliations><list><country><li>France</li><li>Royaume-Uni</li></country><region><li>Île-de-France</li></region><settlement><li>Versailles</li></settlement></list><tree><country name="Royaume-Uni"><noRegion><name sortKey="Langer, Max" sort="Langer, Max" uniqKey="Langer M" first="Max" last="Langer">Max Langer</name></noRegion><name sortKey="Boniface, Michael" sort="Boniface, Michael" uniqKey="Boniface M" first="Michael" last="Boniface">Michael Boniface</name><name sortKey="Cuny, Gilles" sort="Cuny, Gilles" uniqKey="Cuny G" first="Gilles" last="Cuny">Gilles Cuny</name></country><country name="France"><region name="Île-de-France"><name sortKey="Barbieri, Laurent" sort="Barbieri, Laurent" uniqKey="Barbieri L" first="Laurent" last="Barbieri">Laurent Barbieri</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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