Late Ordovician scolecodonts and chitinozoans from the Pin Valley in Spiti, Himachal Pradesh, northern India
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Date
2024-05-08
Authors
Tonarová, Petra
Suttner, Thomas J.
Hints, Olle
Liang, Yan
Zemek, Marek
Kubajko, Michal
Zikmund, Tomáš
Kaiser, Jozef
Kido, Erika
0000-0002-3236-4111Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Instytut Paleobiologii PAN
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Abstract
The end of the Ordovician witnessed major perturbations in the ecosystem, seriously affecting global marine biodiversity. Nevertheless, some marine organism groups and their crisis-bound palaeogeographic distribution are still understudied. Among the outliers are eunicid polychaetes, even though they flourished and diversified extensively during the Ordovician. A collection of seven genera of jaw-bearing polychaetes, including the new ramphoprionid genus Spitiprion Tonarová, Suttner, & Hints, with type new species of Spitiprion khannai Tonarová, Suttner, & Hints, is described here from Katian (Upper Ordovician) deposits of Spiti, northern India. The new species is preserved as isolated maxillae and a jaw cluster, and 3D models of the maxillary apparatus are reconstructed based on submicron-CT. Along with the scolecodonts, a low-diversity assemblage of chitinozoans was recovered, comprising five genera. The most common chitinozoan species are Acanthochitina cf. cancellata and Spinachitina suecica.
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Citation
ACTA PALAEONTOLOGICA POLONICA. 2024, vol. 69, issue 2, p. 199-215.
https://www.app.pan.pl/article/item/app011352024.html
https://www.app.pan.pl/article/item/app011352024.html
Document type
Peer-reviewed
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en