Morphology, ontogeny and phenotypic plasticity of the microcrinoid Treocrinus from the Třebotov nLimestone (Devonian, Daleje–Třebotov Formation, Barrandian area, Czech Republic)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F25%3A00637998" target="_blank" >RIV/86652079:_____/25:00637998 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.geology.cz/bulletin/contents/art1918" target="_blank" >http://www.geology.cz/bulletin/contents/art1918</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3140/bull.geosci.1918" target="_blank" >10.3140/bull.geosci.1918</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Morphology, ontogeny and phenotypic plasticity of the microcrinoid Treocrinus from the Třebotov nLimestone (Devonian, Daleje–Třebotov Formation, Barrandian area, Czech Republic)

Popis výsledku v původním jazyce

New data on morphology, ontogeny, phenotypic plasticity and mode of life of the microcrinoid Treocrinus ericius from the Třebotov Limestone are discussed. The aboral cup shape variations from the barrel- to the bowl-shaped and the ontogenetic sequence of radial facets are presented. Some specimens were likely stemless to the adult stage, and their cup bases were directly fitted to a holdfast. The irregularity of cup shape is explained by different habitats. Individuals nin the restricted, likely cryptic habitat lacked the stem. They had low barrel like cups, whereby while those in more spaced microhabitat formed higher bowlshaped cups. Examination of 160 specimens indicate that bowlshaped cup represents a prevalent form of a theca. The aboral articular facet of bowlshaped specimens keep a distinct lumen, na narrow crenularium and a shallow areola that confirm a development of a column in part of the population. The species achieved the maximum occurrence in the upper part of the Třebotov Limestone (Daleje–Třebotov Formation) near the Emsian–Eifelian boundary. Abundance of the Treocrinus and other microcrinoids, and abundance of associated invertebrates in the Třebotov Limestone clearly contrast with the invertebrate diversity after the Choteč Event near the nbase of the Choteč Formation.

Název v anglickém jazyce

Morphology, ontogeny and phenotypic plasticity of the microcrinoid Treocrinus from the Třebotov nLimestone (Devonian, Daleje–Třebotov Formation, Barrandian area, Czech Republic)

Popis výsledku anglicky

New data on morphology, ontogeny, phenotypic plasticity and mode of life of the microcrinoid Treocrinus ericius from the Třebotov Limestone are discussed. The aboral cup shape variations from the barrel- to the bowl-shaped and the ontogenetic sequence of radial facets are presented. Some specimens were likely stemless to the adult stage, and their cup bases were directly fitted to a holdfast. The irregularity of cup shape is explained by different habitats. Individuals nin the restricted, likely cryptic habitat lacked the stem. They had low barrel like cups, whereby while those in more spaced microhabitat formed higher bowlshaped cups. Examination of 160 specimens indicate that bowlshaped cup represents a prevalent form of a theca. The aboral articular facet of bowlshaped specimens keep a distinct lumen, na narrow crenularium and a shallow areola that confirm a development of a column in part of the population. The species achieved the maximum occurrence in the upper part of the Třebotov Limestone (Daleje–Třebotov Formation) near the Emsian–Eifelian boundary. Abundance of the Treocrinus and other microcrinoids, and abundance of associated invertebrates in the Třebotov Limestone clearly contrast with the invertebrate diversity after the Choteč Event near the nbase of the Choteč Formation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10506 - Paleontology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Bulletin of Geosciences

ISSN

1214-1119

e-ISSN

1802-8225

Svazek periodika

100

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

13

Strana od-do

123-136

Kód UT WoS článku

001538882700002

EID výsledku v databázi Scopus

2-s2.0-105011739465