A unique insight into the growth of necrocarcinoid crabs (Malacostraca: Decapoda: Brachyura): Evidence from the Upper Cretaceous of Siberia (Russia), with a description of a new species

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00617543" target="_blank" >RIV/67985831:_____/25:00617543 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10502453

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S019566712400226X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S019566712400226X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cretres.2024.106053" target="_blank" >10.1016/j.cretres.2024.106053</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A unique insight into the growth of necrocarcinoid crabs (Malacostraca: Decapoda: Brachyura): Evidence from the Upper Cretaceous of Siberia (Russia), with a description of a new species

Popis výsledku v původním jazyce

The Upper Cretaceous (Cenomanian to Coniacian, 100.5–86.3 Ma) strata of the northern Krasnoyarsk Krai (Russia) yielded new fossil brachyuran crab material, based on which a new species, Necrocarcinus sibiricus, is described. Although the specimens come from settings of slightly different ages, all of them display dorsal carapace characteristics consistent with variation attributable to ontogenetic changes related to growth, for instance, the narrowing of the orbitofrontal margin, and a continuous smoothing and widening of the carapace. Interestingly, due to these ontogenetic changes, the largest of the studied specimens exhibits a morphology close to that previously described in Camarocarcinus, a related necrocarcinoid crab genus known from Paleocene strata. The newly described species shows that the dorsal carapace morphology typical for Camarocarcinus can be observed in at least some fully grown necrocarcinids, prompting a re-evaluation of the relationship between Necrocarcinidae and Camarocarcinidae. We propose that camarocarcinids may be derived from within Necrocarcinidae, with the particular morphology of Camarocarcinus resulting from heterochronous developmental processes, i.e., peramorphosis.

Název v anglickém jazyce

A unique insight into the growth of necrocarcinoid crabs (Malacostraca: Decapoda: Brachyura): Evidence from the Upper Cretaceous of Siberia (Russia), with a description of a new species

Popis výsledku anglicky

The Upper Cretaceous (Cenomanian to Coniacian, 100.5–86.3 Ma) strata of the northern Krasnoyarsk Krai (Russia) yielded new fossil brachyuran crab material, based on which a new species, Necrocarcinus sibiricus, is described. Although the specimens come from settings of slightly different ages, all of them display dorsal carapace characteristics consistent with variation attributable to ontogenetic changes related to growth, for instance, the narrowing of the orbitofrontal margin, and a continuous smoothing and widening of the carapace. Interestingly, due to these ontogenetic changes, the largest of the studied specimens exhibits a morphology close to that previously described in Camarocarcinus, a related necrocarcinoid crab genus known from Paleocene strata. The newly described species shows that the dorsal carapace morphology typical for Camarocarcinus can be observed in at least some fully grown necrocarcinids, prompting a re-evaluation of the relationship between Necrocarcinidae and Camarocarcinidae. We propose that camarocarcinids may be derived from within Necrocarcinidae, with the particular morphology of Camarocarcinus resulting from heterochronous developmental processes, i.e., peramorphosis.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10506 - Paleontology

Projekt

<a href="/cs/project/GC21-30418J" target="_blank" >GC21-30418J: Korelace pozdně křídových sedimentárních archívů severní Sibiře a střední Evropy: záznam skleníkového klimatu vysokých a středních zeměpisných šířek</a><br>

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

Cretaceous Research

ISSN

0195-6671

e-ISSN

1095-998X

Svazek periodika

168

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

106053

Kód UT WoS článku

001433925300001

EID výsledku v databázi Scopus

2-s2.0-85211161343