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
The result's identifiers
Result code in 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>
Alternative codes found
RIV/00216208:11310/25:10502453
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
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
Original language description
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.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10506 - Paleontology
Result continuities
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Cretaceous Research
ISSN
0195-6671
e-ISSN
1095-998X
Volume of the periodical
168
Issue of the periodical within the volume
April
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
18
Pages from-to
106053
UT code for WoS article
001433925300001
EID of the result in the Scopus database
2-s2.0-85211161343