EdenteV2, France, Analysis, bibRecord, 000365

Fish diversity of the Bear Gulch Limestone, Namurian, Lower Carboniferous of Montana, USA

Identifieur interne : 000365 ( France/Analysis ); précédent : 000364; suivant : 000366

Fish diversity of the Bear Gulch Limestone, Namurian, Lower Carboniferous of Montana, USA

Auteurs : Richard Lund [États-Unis] ; Cécile Poplin [France]

Source :

Geobios [ 0016-6995 ] ; 1999.

RBID : ISTEX:0211F5B3CA37B553CE2FF190DF11351D2A5AC654

Descripteurs français

Wicri :
- topic : Biodiversité, Poisson, Amérique du Nord.

English descriptors

KwdEn :
- Acanthodes, Acanthodes lundi, Actinopterygian, Actinopterygians, Aire, Biodiversity, Blacktail, Body form, Body forms, Buchek, Buchek area, Calcaire, Carboniferous, Caridosuctor, Central montana, Central montana trough, Chondrichthyans, Coelacanth, Depocenter, Dicksoni, Diversity indices, Dominant elements, Dominant species, Eastern margin, Epicontinental seaway, Facies, Fauna, Faunal, Faunal continuum, Fish, Fish fauna, Forest grove, Gulch, Gulch lens, Gulch limestone, Gulch limestone lens, Heath, Heath formation, Iniop, Larval, Larval actinopterygians, Limestone, Lower carboniferous, Lund, Lundi, Margalef, Margalef index, Marginal facies, Marine, Montana, Namurian, Nord, Nord actuel, North America, Outcrop, Outcrop areas, Paleoenvironment, Place systdmatique, Poissons, Populosum, Resource utilization, Shore area, Shore depocenter, Simpson index, Simpson margalef, Southeastern region, Species diversity, Strepsodus, Taxon, Taxonomic, Transects, Western margin, Western margins, Witzke, Yogo.
Teeft :
- Acanthodes, Acanthodes lundi, Actinopterygian, Actinopterygians, Aire, Blacktail, Body form, Body forms, Buchek, Buchek area, Calcaire, Carboniferous, Caridosuctor, Central montana, Central montana trough, Chondrichthyans, Coelacanth, Depocenter, Dicksoni, Diversity indices, Dominant elements, Dominant species, Eastern margin, Epicontinental seaway, Facies, Fauna, Faunal, Faunal continuum, Fish fauna, Forest grove, Gulch, Gulch lens, Gulch limestone, Gulch limestone lens, Heath, Heath formation, Iniop, Larval, Larval actinopterygians, Limestone, Lower carboniferous, Lund, Lundi, Margalef, Margalef index, Marginal facies, Montana, Namurian, Nord, Nord actuel, Outcrop, Outcrop areas, Place systdmatique, Poissons, Populosum, Resource utilization, Shore area, Shore depocenter, Simpson index, Simpson margalef, Southeastern region, Species diversity, Strepsodus, Taxon, Taxonomic, Transects, Western margin, Western margins, Witzke, Yogo.

Abstract

Abstract: Quarrying operations for fossil fish from the Bear Gulch Limestone (Heath Formation, Namurian,Montana, USA) have occurred from 1968 to 1997 and continue. The Bear Gulch Limestone lens (14×9 km) thins to a shore line on all edges except the buried eastern boundary, and contains an entirely marine flora and fauna. Eighty outcrops have been sampled, and 4 547 identifiable fish of 113 taxa have been recorded. This study details aspects of the diversity and distribution of the fishes of the Bear Gulch Bay analyzed on the basis of geographic areas, following facies and sedimentary criteria. The total diversity of the fish fauna is 21.08 (Simpson index) and 12.07 (Margalef index). Diversity decreases from east to west and towards the southern margin. These trends mask dramatic differences in species occurrences and dominant species in each area. The high diversity of the “Depocenter” area can be accounted for by its proximity to the mouth of the bay and access to the epicontinental seaway to the east. The southeast region is comprised of the Blacktail, Allen, and Buchek areas. Diversity declines greatly from the algae - and sponge - rich Blacktail area southwestward to the marginal Buchek area. This region contains several dominant species that are adapted to lurk in or maneuver among plants, feed from the bottom or burrow. High numbers of larval paleoniscoids and the coelacanth Caridosuctor lower the diversity of the near-shore North Shore area. The western end of the bay is dominated by Acanthodes,, scales of Listracanthus and Strepsodus,, and large cladodont sharks. Fish distributions, preliminary assessments of morphological adaptations, and facies all support the concept of a heterogeneous set of habitats within this fossil bay.

Url:

https://api.istex.fr/document/0211F5B3CA37B553CE2FF190DF11351D2A5AC654/fulltext/pdf

DOI: 10.1016/S0016-6995(99)80042-4

Affiliations:

France, États-Unis

Links toward previous steps (curation, corpus...)

to stream Istex, to step Corpus: 000108
to stream Istex, to step Curation: 000108
to stream Istex, to step Checkpoint: 004289
to stream Main, to step Merge: 009845
to stream Main, to step Curation: 009419
to stream Main, to step Exploration: 009419
to stream France, to step Extraction: 000365

Links to Exploration step

ISTEX:0211F5B3CA37B553CE2FF190DF11351D2A5AC654

Le document en format XML

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<term>Aire</term>
<term>Biodiversity</term>
<term>Blacktail</term>
<term>Body form</term>
<term>Body forms</term>
<term>Buchek</term>
<term>Buchek area</term>
<term>Calcaire</term>
<term>Carboniferous</term>
<term>Caridosuctor</term>
<term>Central montana</term>
<term>Central montana trough</term>
<term>Chondrichthyans</term>
<term>Coelacanth</term>
<term>Depocenter</term>
<term>Dicksoni</term>
<term>Diversity indices</term>
<term>Dominant elements</term>
<term>Dominant species</term>
<term>Eastern margin</term>
<term>Epicontinental seaway</term>
<term>Facies</term>
<term>Fauna</term>
<term>Faunal</term>
<term>Faunal continuum</term>
<term>Fish</term>
<term>Fish fauna</term>
<term>Forest grove</term>
<term>Gulch</term>
<term>Gulch lens</term>
<term>Gulch limestone</term>
<term>Gulch limestone lens</term>
<term>Heath</term>
<term>Heath formation</term>
<term>Iniop</term>
<term>Larval</term>
<term>Larval actinopterygians</term>
<term>Limestone</term>
<term>Lower carboniferous</term>
<term>Lund</term>
<term>Lundi</term>
<term>Margalef</term>
<term>Margalef index</term>
<term>Marginal facies</term>
<term>Marine</term>
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<term>Namurian</term>
<term>Nord</term>
<term>Nord actuel</term>
<term>North America</term>
<term>Outcrop</term>
<term>Outcrop areas</term>
<term>Paleoenvironment</term>
<term>Place systdmatique</term>
<term>Poissons</term>
<term>Populosum</term>
<term>Resource utilization</term>
<term>Shore area</term>
<term>Shore depocenter</term>
<term>Simpson index</term>
<term>Simpson margalef</term>
<term>Southeastern region</term>
<term>Species diversity</term>
<term>Strepsodus</term>
<term>Taxon</term>
<term>Taxonomic</term>
<term>Transects</term>
<term>Western margin</term>
<term>Western margins</term>
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<term>Yogo</term>
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<term>Aire</term>
<term>Blacktail</term>
<term>Body form</term>
<term>Body forms</term>
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<term>Buchek area</term>
<term>Calcaire</term>
<term>Carboniferous</term>
<term>Caridosuctor</term>
<term>Central montana</term>
<term>Central montana trough</term>
<term>Chondrichthyans</term>
<term>Coelacanth</term>
<term>Depocenter</term>
<term>Dicksoni</term>
<term>Diversity indices</term>
<term>Dominant elements</term>
<term>Dominant species</term>
<term>Eastern margin</term>
<term>Epicontinental seaway</term>
<term>Facies</term>
<term>Fauna</term>
<term>Faunal</term>
<term>Faunal continuum</term>
<term>Fish fauna</term>
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<term>Lundi</term>
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<term>Margalef index</term>
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<term>Nord actuel</term>
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<term>Outcrop areas</term>
<term>Place systdmatique</term>
<term>Poissons</term>
<term>Populosum</term>
<term>Resource utilization</term>
<term>Shore area</term>
<term>Shore depocenter</term>
<term>Simpson index</term>
<term>Simpson margalef</term>
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<term>Species diversity</term>
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<term>Western margins</term>
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<term>Yogo</term>
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<front><div type="abstract" xml:lang="en">Abstract: Quarrying operations for fossil fish from the Bear Gulch Limestone (Heath Formation, Namurian,Montana, USA) have occurred from 1968 to 1997 and continue. The Bear Gulch Limestone lens (14×9 km) thins to a shore line on all edges except the buried eastern boundary, and contains an entirely marine flora and fauna. Eighty outcrops have been sampled, and 4 547 identifiable fish of 113 taxa have been recorded. This study details aspects of the diversity and distribution of the fishes of the Bear Gulch Bay analyzed on the basis of geographic areas, following facies and sedimentary criteria. The total diversity of the fish fauna is 21.08 (Simpson index) and 12.07 (Margalef index). Diversity decreases from east to west and towards the southern margin. These trends mask dramatic differences in species occurrences and dominant species in each area. The high diversity of the “Depocenter” area can be accounted for by its proximity to the mouth of the bay and access to the epicontinental seaway to the east. The southeast region is comprised of the Blacktail, Allen, and Buchek areas. Diversity declines greatly from the algae - and sponge - rich Blacktail area southwestward to the marginal Buchek area. This region contains several dominant species that are adapted to lurk in or maneuver among plants, feed from the bottom or burrow. High numbers of larval paleoniscoids and the coelacanth Caridosuctor lower the diversity of the near-shore North Shore area. The western end of the bay is dominated by Acanthodes,, scales of Listracanthus and Strepsodus,, and large cladodont sharks. Fish distributions, preliminary assessments of morphological adaptations, and facies all support the concept of a heterogeneous set of habitats within this fossil bay.</div>
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Fish diversity of the Bear Gulch Limestone, Namurian, Lower Carboniferous of Montana, USA

Fish diversity of the Bear Gulch Limestone, Namurian, Lower Carboniferous of Montana, USA

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri