New Paratethyan dwarf baleen whales mark the origin of cetotheres
Background Family Cetotheriidae sensu stricto and several closely related taxa comprise the Cetotherioidea and represent a lineage of Neogene baleen whales that includes the smallest edentulous baleen whales in Earth history. Most of known cetotheriids came from the Late Miocene to Quaternary, and t...
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ftdoajarticles:oai:doaj.org/article:eb479163839f457bad1f03c5a30c9bef 2024-01-07T09:42:22+01:00 New Paratethyan dwarf baleen whales mark the origin of cetotheres Pavel Gol'din 2018-10-01T00:00:00Z https://doi.org/10.7717/peerj.5800 https://doaj.org/article/eb479163839f457bad1f03c5a30c9bef EN eng PeerJ Inc. https://peerj.com/articles/5800.pdf https://peerj.com/articles/5800/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.5800 2167-8359 https://doaj.org/article/eb479163839f457bad1f03c5a30c9bef PeerJ, Vol 6, p e5800 (2018) Ciuciulea Cetotheriidae Otradnocetus Baleen whales Miocene Paratethys Medicine R Biology (General) QH301-705.5 article 2018 ftdoajarticles https://doi.org/10.7717/peerj.5800 2023-12-10T01:49:56Z Background Family Cetotheriidae sensu stricto and several closely related taxa comprise the Cetotherioidea and represent a lineage of Neogene baleen whales that includes the smallest edentulous baleen whales in Earth history. Most of known cetotheriids came from the Late Miocene to Quaternary, and the earliest records from the latest Middle Miocene. The Paratethys region shows a great diversity of Middle to Late Miocene cetotheriids. That includes nominative taxon of the family, Cetotherium rathkii, and this suggests that the earliest cetotheriids may have lived in that region. Materials and methods Here, Ciuciulea davidi, a new genus and species from the Middle Miocene of southeastern Europe, is described as the chronologically earliest and earliest diverging member of Cetotheriidae. Also, a new specimen of Otradnocetus, a basal Cetotherioidea sensu Gol’din & Steeman, 2015 is identified from the Late Miocene deposits of Caucasus and compared with Otradnocetus virodovi from the Middle Miocene of the same region. Results and discussion Ciuciulea davidi is a dwarf whale displaying primitive traits: posterior ends of facial bones forming a single transverse line, a narrow occipital shield, and a relatively long interparietal region. Meanwhile, it shares some cetotheriid apomorphies: posteriorly telescoped wedge-shaped facial bones and an ovoid tympanic bulla with shallow lateral and medial furrows, a short anterior lobe and a short sigmoid process. Phylogenetic analysis suggests that Parietobalaena and Otradnocetus are branches diverging before the clade Cetotheriidae + Neobalaenidae. This is confirmed by the stepwise evolution of the anatomy of the squamosal, mandible, and ear bones across these groups. The re-described juvenile specimen of Otradnocetus differs from O. virodovi in the more primitive anatomy of the mandible and the autapomorphic anatomy of the humerus. Records of the earliest cetotheriids and related taxa in the Paratethys support the idea that this could be the region where Cetotheriidae ... Article in Journal/Newspaper baleen whales Directory of Open Access Journals: DOAJ Articles PeerJ 6 e5800 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ciuciulea Cetotheriidae Otradnocetus Baleen whales Miocene Paratethys Medicine R Biology (General) QH301-705.5 |
spellingShingle |
Ciuciulea Cetotheriidae Otradnocetus Baleen whales Miocene Paratethys Medicine R Biology (General) QH301-705.5 Pavel Gol'din New Paratethyan dwarf baleen whales mark the origin of cetotheres |
topic_facet |
Ciuciulea Cetotheriidae Otradnocetus Baleen whales Miocene Paratethys Medicine R Biology (General) QH301-705.5 |
description |
Background Family Cetotheriidae sensu stricto and several closely related taxa comprise the Cetotherioidea and represent a lineage of Neogene baleen whales that includes the smallest edentulous baleen whales in Earth history. Most of known cetotheriids came from the Late Miocene to Quaternary, and the earliest records from the latest Middle Miocene. The Paratethys region shows a great diversity of Middle to Late Miocene cetotheriids. That includes nominative taxon of the family, Cetotherium rathkii, and this suggests that the earliest cetotheriids may have lived in that region. Materials and methods Here, Ciuciulea davidi, a new genus and species from the Middle Miocene of southeastern Europe, is described as the chronologically earliest and earliest diverging member of Cetotheriidae. Also, a new specimen of Otradnocetus, a basal Cetotherioidea sensu Gol’din & Steeman, 2015 is identified from the Late Miocene deposits of Caucasus and compared with Otradnocetus virodovi from the Middle Miocene of the same region. Results and discussion Ciuciulea davidi is a dwarf whale displaying primitive traits: posterior ends of facial bones forming a single transverse line, a narrow occipital shield, and a relatively long interparietal region. Meanwhile, it shares some cetotheriid apomorphies: posteriorly telescoped wedge-shaped facial bones and an ovoid tympanic bulla with shallow lateral and medial furrows, a short anterior lobe and a short sigmoid process. Phylogenetic analysis suggests that Parietobalaena and Otradnocetus are branches diverging before the clade Cetotheriidae + Neobalaenidae. This is confirmed by the stepwise evolution of the anatomy of the squamosal, mandible, and ear bones across these groups. The re-described juvenile specimen of Otradnocetus differs from O. virodovi in the more primitive anatomy of the mandible and the autapomorphic anatomy of the humerus. Records of the earliest cetotheriids and related taxa in the Paratethys support the idea that this could be the region where Cetotheriidae ... |
format |
Article in Journal/Newspaper |
author |
Pavel Gol'din |
author_facet |
Pavel Gol'din |
author_sort |
Pavel Gol'din |
title |
New Paratethyan dwarf baleen whales mark the origin of cetotheres |
title_short |
New Paratethyan dwarf baleen whales mark the origin of cetotheres |
title_full |
New Paratethyan dwarf baleen whales mark the origin of cetotheres |
title_fullStr |
New Paratethyan dwarf baleen whales mark the origin of cetotheres |
title_full_unstemmed |
New Paratethyan dwarf baleen whales mark the origin of cetotheres |
title_sort |
new paratethyan dwarf baleen whales mark the origin of cetotheres |
publisher |
PeerJ Inc. |
publishDate |
2018 |
url |
https://doi.org/10.7717/peerj.5800 https://doaj.org/article/eb479163839f457bad1f03c5a30c9bef |
genre |
baleen whales |
genre_facet |
baleen whales |
op_source |
PeerJ, Vol 6, p e5800 (2018) |
op_relation |
https://peerj.com/articles/5800.pdf https://peerj.com/articles/5800/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.5800 2167-8359 https://doaj.org/article/eb479163839f457bad1f03c5a30c9bef |
op_doi |
https://doi.org/10.7717/peerj.5800 |
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e5800 |
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1787423323470168064 |