Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica
Rare remains of predominantly deep-water sharks of the families Hexanchidae, Squalidae, Dalatiidae, Centrophoridae, and Squatinidae are described from the Eocene La Meseta Formation, Seymour Island, Antarctic Peninsula, which has yielded the most abundant chondrichthyan assemblage from the Southern...
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ftpubmed:oai:pubmedcentral.nih.gov:5673068 2023-05-15T13:36:40+02:00 Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica Engelbrecht, Andrea Mörs, Thomas Reguero, Marcelo A. Kriwet, Jürgen 2017-07-21 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673068/ https://doi.org/10.1016/j.jsames.2017.07.006 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673068/ http://dx.doi.org/10.1016/j.jsames.2017.07.006 Article Text 2017 ftpubmed https://doi.org/10.1016/j.jsames.2017.07.006 2017-11-12T01:23:25Z Rare remains of predominantly deep-water sharks of the families Hexanchidae, Squalidae, Dalatiidae, Centrophoridae, and Squatinidae are described from the Eocene La Meseta Formation, Seymour Island, Antarctic Peninsula, which has yielded the most abundant chondrichthyan assemblage from the Southern Hemisphere to date. Previously described representatives of Hexanchus sp., Squalus weltoni, Squalus woodburnei, Centrophorus sp., and Squatina sp. are confirmed and dental variations are documented. Although the teeth of Squatina sp. differ from other Palaeogene squatinid species, we refrain from introducing a new species. A new dalatiid taxon, Eodalatias austrinalis gen. et sp. nov. is described. This new material not only increases the diversity of Eocene Antarctic elasmobranchs but also allows assuming that favourable deep-water habitats were available in the Eocene Antarctic Ocean off Antarctica in the Eocene. The occurrences of deep-water inhabitants in shallow, near-coastal waters of the Antarctic Peninsula agrees well with extant distribution patterns. Text Antarc* Antarctic Antarctic Ocean Antarctic Peninsula Antarctica Seymour Island PubMed Central (PMC) Antarctic Antarctic Ocean Antarctic Peninsula Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) The Antarctic Journal of South American Earth Sciences 78 175 189 |
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Article Engelbrecht, Andrea Mörs, Thomas Reguero, Marcelo A. Kriwet, Jürgen Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica |
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Article |
description |
Rare remains of predominantly deep-water sharks of the families Hexanchidae, Squalidae, Dalatiidae, Centrophoridae, and Squatinidae are described from the Eocene La Meseta Formation, Seymour Island, Antarctic Peninsula, which has yielded the most abundant chondrichthyan assemblage from the Southern Hemisphere to date. Previously described representatives of Hexanchus sp., Squalus weltoni, Squalus woodburnei, Centrophorus sp., and Squatina sp. are confirmed and dental variations are documented. Although the teeth of Squatina sp. differ from other Palaeogene squatinid species, we refrain from introducing a new species. A new dalatiid taxon, Eodalatias austrinalis gen. et sp. nov. is described. This new material not only increases the diversity of Eocene Antarctic elasmobranchs but also allows assuming that favourable deep-water habitats were available in the Eocene Antarctic Ocean off Antarctica in the Eocene. The occurrences of deep-water inhabitants in shallow, near-coastal waters of the Antarctic Peninsula agrees well with extant distribution patterns. |
format |
Text |
author |
Engelbrecht, Andrea Mörs, Thomas Reguero, Marcelo A. Kriwet, Jürgen |
author_facet |
Engelbrecht, Andrea Mörs, Thomas Reguero, Marcelo A. Kriwet, Jürgen |
author_sort |
Engelbrecht, Andrea |
title |
Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica |
title_short |
Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica |
title_full |
Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica |
title_fullStr |
Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica |
title_full_unstemmed |
Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica |
title_sort |
eocene squalomorph sharks (chondrichthyes, elasmobranchii) from antarctica |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673068/ https://doi.org/10.1016/j.jsames.2017.07.006 |
long_lat |
ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Antarctic Antarctic Ocean Antarctic Peninsula Seymour Seymour Island The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Antarctic Peninsula Seymour Seymour Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean Antarctic Peninsula Antarctica Seymour Island |
genre_facet |
Antarc* Antarctic Antarctic Ocean Antarctic Peninsula Antarctica Seymour Island |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673068/ http://dx.doi.org/10.1016/j.jsames.2017.07.006 |
op_doi |
https://doi.org/10.1016/j.jsames.2017.07.006 |
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Journal of South American Earth Sciences |
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78 |
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175 |
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189 |
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1766082256729800704 |