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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10506 - Paleontology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Bulletin of Geosciences

ISSN

1214-1119

e-ISSN

1802-8225

Volume of the periodical

100

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

13

Pages from-to

123-136

UT code for WoS article

001538882700002

EID of the result in the Scopus database

2-s2.0-105011739465