Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales
Although combined molecular and morphological analyses point to a late middle Eocene (38–39 million years ago) origin for the clade Neoceti (Odontoceti, echolocating toothed whales plus Mysticeti, baleen whales, and relatives), the oldest known mysticete fossil dates from the latest Eocene (about 34...
Published in: | Current Biology |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | http://www.vliz.be/nl/open-marien-archief?module=ref&refid=295663 |
id |
ftvliz:oai:oma.vliz.be:295663 |
---|---|
record_format |
openpolar |
spelling |
ftvliz:oai:oma.vliz.be:295663 2023-05-15T13:54:11+02:00 Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales Lambert, O. Martínez-Cáceres, M. Bianucci, G. Di Celma, C. Salas-Gismondi, R. Steurbaut, E. Urbina, M. de Muizon, C. 2017 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=295663 en eng info:eu-repo/semantics/altIdentifier/wos/000401696100029 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.cub.2017.04.026 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=295663 info:eu-repo/semantics/restrictedAccess %3Ci%3ECurr.+Biol.+27%2810%29%3C%2Fi%3E%3A+1535-1541.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.cub.2017.04.026%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.cub.2017.04.026%3C%2Fa%3E Cetacea [whales dolphins and porpoises] Mysticeti [baleen whales] info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 ftvliz https://doi.org/10.1016/j.cub.2017.04.026 2022-05-01T10:59:59Z Although combined molecular and morphological analyses point to a late middle Eocene (38–39 million years ago) origin for the clade Neoceti (Odontoceti, echolocating toothed whales plus Mysticeti, baleen whales, and relatives), the oldest known mysticete fossil dates from the latest Eocene (about 34 million years ago) of Antarctica. Considering that the latter is not the most stemward mysticete in recent phylogenies and that Oligocene toothed mysticetes display a broad morphological disparity most likely corresponding to contrasted ecological niches, the origin of mysticetes from a basilosaurid ancestor and its drivers are currently poorly understood. Based on an articulated cetacean skeleton from the early late Eocene (Priabonian, around 36.4 million years ago) of the Pisco Basin, Peru, we describe a new archaic tooth-bearing mysticete, Mystacodon selenensis gen. et sp. nov. Being the geologically oldest neocete (crown group cetacean) and the earliest mysticete to branch off described so far, the new taxon is interpreted as morphologically intermediate between basilosaurids and later toothed mysticetes, providing thus crucial information about the anatomy of the skull, forelimb, and innominate at these critical initial stages of mysticete evolution. Major changes in the morphology of the oral apparatus (including tooth wear) and flipper compared to basilosaurids suggest that suction and possibly benthic feeding represented key, early ecological traits accompanying the emergence of modern filter-feeding baleen whales’ ancestors. Article in Journal/Newspaper Antarc* Antarctica baleen whales toothed whales Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Pisco ENVELOPE(-62.450,-62.450,-62.950,-62.950) Current Biology 27 10 1535 1541.e2 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
topic |
Cetacea [whales dolphins and porpoises] Mysticeti [baleen whales] |
spellingShingle |
Cetacea [whales dolphins and porpoises] Mysticeti [baleen whales] Lambert, O. Martínez-Cáceres, M. Bianucci, G. Di Celma, C. Salas-Gismondi, R. Steurbaut, E. Urbina, M. de Muizon, C. Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales |
topic_facet |
Cetacea [whales dolphins and porpoises] Mysticeti [baleen whales] |
description |
Although combined molecular and morphological analyses point to a late middle Eocene (38–39 million years ago) origin for the clade Neoceti (Odontoceti, echolocating toothed whales plus Mysticeti, baleen whales, and relatives), the oldest known mysticete fossil dates from the latest Eocene (about 34 million years ago) of Antarctica. Considering that the latter is not the most stemward mysticete in recent phylogenies and that Oligocene toothed mysticetes display a broad morphological disparity most likely corresponding to contrasted ecological niches, the origin of mysticetes from a basilosaurid ancestor and its drivers are currently poorly understood. Based on an articulated cetacean skeleton from the early late Eocene (Priabonian, around 36.4 million years ago) of the Pisco Basin, Peru, we describe a new archaic tooth-bearing mysticete, Mystacodon selenensis gen. et sp. nov. Being the geologically oldest neocete (crown group cetacean) and the earliest mysticete to branch off described so far, the new taxon is interpreted as morphologically intermediate between basilosaurids and later toothed mysticetes, providing thus crucial information about the anatomy of the skull, forelimb, and innominate at these critical initial stages of mysticete evolution. Major changes in the morphology of the oral apparatus (including tooth wear) and flipper compared to basilosaurids suggest that suction and possibly benthic feeding represented key, early ecological traits accompanying the emergence of modern filter-feeding baleen whales’ ancestors. |
format |
Article in Journal/Newspaper |
author |
Lambert, O. Martínez-Cáceres, M. Bianucci, G. Di Celma, C. Salas-Gismondi, R. Steurbaut, E. Urbina, M. de Muizon, C. |
author_facet |
Lambert, O. Martínez-Cáceres, M. Bianucci, G. Di Celma, C. Salas-Gismondi, R. Steurbaut, E. Urbina, M. de Muizon, C. |
author_sort |
Lambert, O. |
title |
Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales |
title_short |
Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales |
title_full |
Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales |
title_fullStr |
Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales |
title_full_unstemmed |
Earliest Mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales |
title_sort |
earliest mysticete from the late eocene of peru sheds new light on the origin of baleen whales |
publishDate |
2017 |
url |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=295663 |
long_lat |
ENVELOPE(-62.450,-62.450,-62.950,-62.950) |
geographic |
Pisco |
geographic_facet |
Pisco |
genre |
Antarc* Antarctica baleen whales toothed whales |
genre_facet |
Antarc* Antarctica baleen whales toothed whales |
op_source |
%3Ci%3ECurr.+Biol.+27%2810%29%3C%2Fi%3E%3A+1535-1541.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.cub.2017.04.026%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.cub.2017.04.026%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000401696100029 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.cub.2017.04.026 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=295663 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.cub.2017.04.026 |
container_title |
Current Biology |
container_volume |
27 |
container_issue |
10 |
container_start_page |
1535 |
op_container_end_page |
1541.e2 |
_version_ |
1766259866600472576 |