A new nektaspid euarthropod from the Lower Ordovician strata of Morocco

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F21%3A00541929" target="_blank" >RIV/67985831:_____/21:00541929 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10438507

Výsledek na webu

<a href="https://www.cambridge.org/core/journals/geological-magazine/article/abs/new-nektaspid-euarthropod-from-the-lower-ordovician-strata-of-morocco/50E1FE68F9E38151AA2EC93E92222BFE" target="_blank" >https://www.cambridge.org/core/journals/geological-magazine/article/abs/new-nektaspid-euarthropod-from-the-lower-ordovician-strata-of-morocco/50E1FE68F9E38151AA2EC93E92222BFE</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S001675682000062X" target="_blank" >10.1017/S001675682000062X</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A new nektaspid euarthropod from the Lower Ordovician strata of Morocco

Popis výsledku v původním jazyce

Nektaspids are Palaeozoic non-biomineralized euarthropods that were at the peak of their diversity during the Cambrian Period. Post-Cambrian nektaspids are a low-diversity group with only a few species described so far. Here we describe Tariccoia tazagurtensis, a new species of small-bodied nektaspid from the Lower Ordovician Fezouata Shale of Morocco. The new species differs from the type (and only other known) species from the Ordovician strata of Sardinia (Italy), Tariccoia arrusensis, in possessing more pointed genal angles, a cephalon with marginal rim, a pygidium with anterior margin curved forwards, a rounded posterior margin, and longer and more curved thoracic tergites. The two specimens of T. tazagurtensis sp. nov. show remains of digestive glands that are comparable to those seen in the Cambrian nektaspid Naraoia. The rare occurrence of T. tazagurtensis sp. nov. in the Fezouata Shale and the distribution of other liwiids suggest that these liwiids were originally minor members of open-marine communities during the Cambrian Period, and migrated into colder brackish or restricted seas during the Ordovician Period.

Název v anglickém jazyce

A new nektaspid euarthropod from the Lower Ordovician strata of Morocco

Popis výsledku anglicky

Nektaspids are Palaeozoic non-biomineralized euarthropods that were at the peak of their diversity during the Cambrian Period. Post-Cambrian nektaspids are a low-diversity group with only a few species described so far. Here we describe Tariccoia tazagurtensis, a new species of small-bodied nektaspid from the Lower Ordovician Fezouata Shale of Morocco. The new species differs from the type (and only other known) species from the Ordovician strata of Sardinia (Italy), Tariccoia arrusensis, in possessing more pointed genal angles, a cephalon with marginal rim, a pygidium with anterior margin curved forwards, a rounded posterior margin, and longer and more curved thoracic tergites. The two specimens of T. tazagurtensis sp. nov. show remains of digestive glands that are comparable to those seen in the Cambrian nektaspid Naraoia. The rare occurrence of T. tazagurtensis sp. nov. in the Fezouata Shale and the distribution of other liwiids suggest that these liwiids were originally minor members of open-marine communities during the Cambrian Period, and migrated into colder brackish or restricted seas during the Ordovician Period.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10506 - Paleontology

Projekt

<a href="/cs/project/GA18-14575S" target="_blank" >GA18-14575S: Fosilní společenstva libeňského a letenského souvrství (svrchní ordovik) - klíč k pochopení Fezouata a Tafilalt biotas z Maroka</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Geological Magazine

ISSN

0016-7568

e-ISSN

1469-5081

Svazek periodika

158

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

509-517

Kód UT WoS článku

000617280900008

EID výsledku v databázi Scopus

2-s2.0-85088523074