Rhynchostreon oyster assemblages across the Central European region: Three types of environment and an alternative view in the intraspecific variability of Rhynchostreon suborbiculatum (Lamarck, 1801)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10474364" target="_blank" >RIV/00216208:11310/24:10474364 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NDUD~gTO3B" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NDUD~gTO3B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cretres.2023.105747" target="_blank" >10.1016/j.cretres.2023.105747</a>

Result language

angličtina

Original language name

Rhynchostreon oyster assemblages across the Central European region: Three types of environment and an alternative view in the intraspecific variability of Rhynchostreon suborbiculatum (Lamarck, 1801)

Original language description

The morphological variability in Rhynchostreon suborbiculatum (Lamarck, 1801) is a well-known phenomenon in the Cretaceous palaeobiology. The current study focuses on two morphotypes differentiated by the presence/absence of radial ribs on the apical part of the left valve, while the fusion of palaeoecological and morphological results allows the study of the evolution of R. suborbiculatum under specific environmental conditions. Based on analyses of grain size, concentration of major oxides and oyster taphonomy in five Cenomanian-Turonian oyster-bearing localities, three habitats that differ in substrate, energy level and salinity regime were recognised: the dynamic Cenomanian nearshore environment (environment B), the Turonian hemipelagic environment (environment C) and the Cenomanian-Turonian marginal marine environment influenced by river dynamics (environment A). An analysis of the size distribution and morphotype structures of three palaeopopulations of R. suborbiculatum shows lithofacial dependence in morphotype distribution, indicating substrate granularity and level of environmental energy. The higher prevalence of ribbed morphs in smaller size classes as well as in fine-grained deposits suggests that apical ribbing is an adaptive trait with a stabilising effect, especially during the early growth stages or when colonising low-energy environments with very soft substrates. The distribution of the large size classes, combined with the shell thickness and vaulting, suggest that the compensation provided by the ribs is insufficient in high energy environments, where strong waves, turbulent flow, and higher sedimentation rates are the main selection pressures. Thus, other adaptations, such as body size and massiveness of the shell, become more critical for the survival of individuals.

Czech name

—

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

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GC21-30418J" target="_blank" >GC21-30418J: Linking high- and mid-latitude sedimentary archives of the Late Cretaceous greenhouse: correlations between Northern Siberia and Central Europe</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Cretaceous Research

ISSN

0195-6671

e-ISSN

1095-998X

Volume of the periodical

154

Issue of the periodical within the volume

February

Country of publishing house

GB - UNITED KINGDOM

Number of pages

25

Pages from-to

105747

UT code for WoS article

001112457700001

EID of the result in the Scopus database

2-s2.0-85177078124