The oldest known heterobranch gastropod, Kuskokwimia gen. nov., from the Early Devonian of west-central Alaska, with notes on the early phylogeny of higher gastropods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F03%3A00000019" target="_blank" >RIV/00025798:_____/03:00000019 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00025798:_____/01:00000429

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

The oldest known heterobranch gastropod, Kuskokwimia gen. nov., from the Early Devonian of west-central Alaska, with notes on the early phylogeny of higher gastropods

Popis výsledku v původním jazyce

A new gastropod, Kuskokwimia moorei gen. et sp. nov., with a dextral teleoconch and small, sinistrally coiled protoconch is described from Emsian (late Early Devonian) strata of the Medfra B-4 quadrangle, west-central Alaska. The genus Kuskokwimia is placed in a new family, the Kuskokwimiidae fam. nov., considered to be the oldest and first undoubted Middle Paleozoic representative of the subclass Heterobranchia. It is suggested that the Heterobranchia have been separated from other gastropod groups atleast since the Early Devonian, or perhaps even earlier. Shell heterostrophy (anastrophic as well as inclined heterostrophic coiling) can no longer be considered a unique character of the subclass Heterobranchia, because it is also well documented now inthe slit-bearing Archaeogastropoda. The origin of shell heterostrophy seems to be connected with a reorganization of the pallial organs during early shell ontogeny

Název v anglickém jazyce

The oldest known heterobranch gastropod, Kuskokwimia gen. nov., from the Early Devonian of west-central Alaska, with notes on the early phylogeny of higher gastropods

Popis výsledku anglicky

A new gastropod, Kuskokwimia moorei gen. et sp. nov., with a dextral teleoconch and small, sinistrally coiled protoconch is described from Emsian (late Early Devonian) strata of the Medfra B-4 quadrangle, west-central Alaska. The genus Kuskokwimia is placed in a new family, the Kuskokwimiidae fam. nov., considered to be the oldest and first undoubted Middle Paleozoic representative of the subclass Heterobranchia. It is suggested that the Heterobranchia have been separated from other gastropod groups atleast since the Early Devonian, or perhaps even earlier. Shell heterostrophy (anastrophic as well as inclined heterostrophic coiling) can no longer be considered a unique character of the subclass Heterobranchia, because it is also well documented now inthe slit-bearing Archaeogastropoda. The origin of shell heterostrophy seems to be connected with a reorganization of the pallial organs during early shell ontogeny

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA205%2F01%2F0143" target="_blank" >GA205/01/0143: Evoluce, systematika a paleobiogegrafické vztahy devonských gastropodů pražské pánve (Čechy) a Farewell terrane (Aljaška)</a><br>

Návaznosti

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

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název periodika

Bulletin of the Czech Geological Survey

ISSN

1210-3527

e-ISSN

—

Svazek periodika

76

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

15

Strana od-do

39-53

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—