New Silurian murchisoniid gastropods from Alaska and a review of the genus Coelocaulus

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F03%3A00000027" target="_blank" >RIV/00025798:_____/03:00000027 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

New Silurian murchisoniid gastropods from Alaska and a review of the genus Coelocaulus

Original language description

Coelocaulus karlae n. sp. and Medfracaulus cooki n. gen., n. sp. are described from the Silurian of west-central and southeastern Alaska respectively. Coelocaulus is redefined to limit the content to selenizone-bearing murchisoniids with a deep, straight-walled umbilicus and without a columellar flange. The presence of a deep umbilicus in high-spired shells cannot be used alone as a diagnostic character of Coelocaulus, as on this basis many other non-murchisoniid species (mainly based on steinkerns) have erroneously been attributed to the genus. Establishment and recognition of these unusually large, deeply umbilicate murchisoniid shells is important for the Silurian biostratigraphy of Alaskan terranes. Both genera are abundant and are characteristic of Upper Silurian strata of west-central Alaska. Similar morphotypes are unknown from rocks located undoubtedly on the North American continent (Laurentia) during the Late Silurian.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

<a href="/en/project/GA205%2F01%2F0143" target="_blank" >GA205/01/0143: Evolution, systematics and paleobiogeographic relationship of devonian gastropods from the Prague basin (Bohemia) and the Farewell terrane (Alaska)</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Short Notes on Alaska Geology

ISSN

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e-ISSN

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Volume of the periodical

120

Issue of the periodical within the volume

October

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

87-93

UT code for WoS article

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EID of the result in the Scopus database

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