A new nektaspid euarthropod from the Lower Ordovician strata of Morocco

Result code in 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>
Alternative codes found
RIV/00216208:11310/21:10438507
Result on the web
<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>

Result language
angličtina
Original language name
A new nektaspid euarthropod from the Lower Ordovician strata of Morocco
Original language description
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.
Czech name
—
Czech description
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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

Project
<a href="/en/project/GA18-14575S" target="_blank" >GA18-14575S: Fossil assemblages of Libeň and Letná formations (Upper Ordovician) - keys to the understanding of Fezouata and Tafilalt biotas of Morocco</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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