Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia)
Abstract A mammalian petrosal from the Lower Cretaceous Teete locality in Yakutia (Russia) shows a prominent and complex system of venous channels in the bony wall of the pars cochlearis surrounding the straight cochlear canal. This complex venous system is distinctive and more strongly developed th...
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ftdoajarticles:oai:doaj.org/article:9a283b7c1dc64927b0d30164c7f81962 2023-05-15T18:44:55+02:00 Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia) Julia A. Schultz Rico Schellhorn Pavel P. Skutschas Dmitry D. Vitenko Veniamin V. Kolchanov Dmitry V. Grigoriev Ivan T. Kuzmin Petr N. Kolosov Alexey V. Lopatin Alexander O. Averianov Thomas Martin 2022-04-01T00:00:00Z https://doi.org/10.3897/vz.72.e78479 https://doaj.org/article/9a283b7c1dc64927b0d30164c7f81962 EN eng Pensoft https://vertebrate-zoology.arphahub.com/article/78479/download/pdf/ https://vertebrate-zoology.arphahub.com/article/78479/download/xml/ https://vertebrate-zoology.arphahub.com/article/78479/ https://doaj.org/toc/2625-8498 doi:10.3897/vz.72.e78479 2625-8498 https://doaj.org/article/9a283b7c1dc64927b0d30164c7f81962 Vertebrate Zoology, Vol 72, Iss , Pp 159-168 (2022) Zoology QL1-991 article 2022 ftdoajarticles https://doi.org/10.3897/vz.72.e78479 2022-12-31T00:11:27Z Abstract A mammalian petrosal from the Lower Cretaceous Teete locality in Yakutia (Russia) shows a prominent and complex system of venous channels in the bony wall of the pars cochlearis surrounding the straight cochlear canal. This complex venous system is distinctive and more strongly developed than in other mammalian petrosals. A bony ridge is present on the ventral side of the cochlear canal endocast, continuing from between fenestra vestibuli and fenestra cochleae in anterior direction. This ridge corresponds to the position of the scala tympani, and is similar to the secondary bony lamina of crown therians, but lacks the sharp laminar edge. The fenestra cochleae is separate from the canal for the aquaeductus cochleae (derived), but the fenestra retains a deep sulcus that resembles the perilymphatic sulcus (plesiomorphic). The fenestra cochleae is oval shaped and deep. The straight cochlear canal with a ridge on the ventral side strongly resembles that of eutriconodontans like Priacodon fruitaensis from the Upper Jurassic of North America. However, thick and extensive venous channels in the pars cochlearis are otherwise known from docodontans. In the Teete petrosal the channels are even more developed, and resemble the pattern recently reported from possible haramiyidan petrosals from the Middle Jurassic of western Siberia (Russia). Both eutriconodontan and haramiyidan dental remains are known from the Teete locality beside that of tritylodontids and docodontans. Article in Journal/Newspaper Yakutia Siberia Directory of Open Access Journals: DOAJ Articles Vertebrate Zoology 72 159 168 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Zoology QL1-991 |
spellingShingle |
Zoology QL1-991 Julia A. Schultz Rico Schellhorn Pavel P. Skutschas Dmitry D. Vitenko Veniamin V. Kolchanov Dmitry V. Grigoriev Ivan T. Kuzmin Petr N. Kolosov Alexey V. Lopatin Alexander O. Averianov Thomas Martin Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia) |
topic_facet |
Zoology QL1-991 |
description |
Abstract A mammalian petrosal from the Lower Cretaceous Teete locality in Yakutia (Russia) shows a prominent and complex system of venous channels in the bony wall of the pars cochlearis surrounding the straight cochlear canal. This complex venous system is distinctive and more strongly developed than in other mammalian petrosals. A bony ridge is present on the ventral side of the cochlear canal endocast, continuing from between fenestra vestibuli and fenestra cochleae in anterior direction. This ridge corresponds to the position of the scala tympani, and is similar to the secondary bony lamina of crown therians, but lacks the sharp laminar edge. The fenestra cochleae is separate from the canal for the aquaeductus cochleae (derived), but the fenestra retains a deep sulcus that resembles the perilymphatic sulcus (plesiomorphic). The fenestra cochleae is oval shaped and deep. The straight cochlear canal with a ridge on the ventral side strongly resembles that of eutriconodontans like Priacodon fruitaensis from the Upper Jurassic of North America. However, thick and extensive venous channels in the pars cochlearis are otherwise known from docodontans. In the Teete petrosal the channels are even more developed, and resemble the pattern recently reported from possible haramiyidan petrosals from the Middle Jurassic of western Siberia (Russia). Both eutriconodontan and haramiyidan dental remains are known from the Teete locality beside that of tritylodontids and docodontans. |
format |
Article in Journal/Newspaper |
author |
Julia A. Schultz Rico Schellhorn Pavel P. Skutschas Dmitry D. Vitenko Veniamin V. Kolchanov Dmitry V. Grigoriev Ivan T. Kuzmin Petr N. Kolosov Alexey V. Lopatin Alexander O. Averianov Thomas Martin |
author_facet |
Julia A. Schultz Rico Schellhorn Pavel P. Skutschas Dmitry D. Vitenko Veniamin V. Kolchanov Dmitry V. Grigoriev Ivan T. Kuzmin Petr N. Kolosov Alexey V. Lopatin Alexander O. Averianov Thomas Martin |
author_sort |
Julia A. Schultz |
title |
Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia) |
title_short |
Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia) |
title_full |
Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia) |
title_fullStr |
Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia) |
title_full_unstemmed |
Mammalian petrosal from the Lower Cretaceous high paleo-latitude Teete locality (Yakutia, Eastern Russia) |
title_sort |
mammalian petrosal from the lower cretaceous high paleo-latitude teete locality (yakutia, eastern russia) |
publisher |
Pensoft |
publishDate |
2022 |
url |
https://doi.org/10.3897/vz.72.e78479 https://doaj.org/article/9a283b7c1dc64927b0d30164c7f81962 |
genre |
Yakutia Siberia |
genre_facet |
Yakutia Siberia |
op_source |
Vertebrate Zoology, Vol 72, Iss , Pp 159-168 (2022) |
op_relation |
https://vertebrate-zoology.arphahub.com/article/78479/download/pdf/ https://vertebrate-zoology.arphahub.com/article/78479/download/xml/ https://vertebrate-zoology.arphahub.com/article/78479/ https://doaj.org/toc/2625-8498 doi:10.3897/vz.72.e78479 2625-8498 https://doaj.org/article/9a283b7c1dc64927b0d30164c7f81962 |
op_doi |
https://doi.org/10.3897/vz.72.e78479 |
container_title |
Vertebrate Zoology |
container_volume |
72 |
container_start_page |
159 |
op_container_end_page |
168 |
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1766235793971478528 |