A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae)
Nowadays, the odontocete family Kogiidae is monotypic and only includes two species of diminutive relatives of the great sperm whale Physeter Linnaeus, 1758. Conversely, a growing body of extinct species indicates that kogiids were diverse and disparate during the late Neogene. The fossil record of...
Published in: | Comptes Rendus Palevol |
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Online Access: | http://hdl.handle.net/11568/1070698 https://doi.org/10.5852/cr-palevol2020v19a5 https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/19/5 |
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ftunivpisairis:oai:arpi.unipi.it:11568/1070698 2024-04-14T08:20:08+00:00 A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae) COLLARETA, Alberto LAMBERT, Olivier MUIZON, Christian de BENITES PALOMINO, Aldo Marcelo URBINA, Mario BIANUCCI, Giovanni Collareta, Alberto Lambert, Olivier Muizon, Christian de BENITES PALOMINO, Aldo Marcelo Urbina, Mario Bianucci, Giovanni 2020 ELETTRONICO http://hdl.handle.net/11568/1070698 https://doi.org/10.5852/cr-palevol2020v19a5 https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/19/5 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000575787800001 volume:19 issue:5 firstpage:79 lastpage:100 numberofpages:22 journal:COMPTES RENDUS PALEVOL http://hdl.handle.net/11568/1070698 doi:10.5852/cr-palevol2020v19a5 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85105000450 https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/19/5 info:eu-repo/semantics/openAccess Scaphokogiinae Pisco Formation East Pisco Basin Messinian new genus new species info:eu-repo/semantics/article 2020 ftunivpisairis https://doi.org/10.5852/cr-palevol2020v19a5 2024-03-21T19:16:38Z Nowadays, the odontocete family Kogiidae is monotypic and only includes two species of diminutive relatives of the great sperm whale Physeter Linnaeus, 1758. Conversely, a growing body of extinct species indicates that kogiids were diverse and disparate during the late Neogene. The fossil record of Kogiidae is, to date, represented by several cranial specimens from Mio-Pliocene localities of the Northern Hemisphere, with the significant Southern Hemisphere exception of the Pisco Formation of Peru, from which two genera were known so far, including Scaphokogia Muizon, 1988, a highly idiosyncratic form characterised by a distinctly spoon-shaped dorsal surface of the neurocranium and a downturned semicylindrical rostrum, which is even placed in its own subfamily Scaphokogiinae. Here, we report on two skulls of Kogiidae from the Messinian (upper Miocene) portion of the Pisco Formation exposed in the East Pisco Basin. These two skulls are referred to the new taxon Platyscaphokogia landinii n. gen., n. sp., which our phylogenetic analysis recovers as sister group of Scaphokogia, within the subfamily Scaphokogiinae. Although Platyscaphokogia n. gen. shares with Scaphokogia a remarkably spoon-like dorsal aspect of the neurocranium, it retains a non-pachyostotic, dorsoventrally thin rostrum that distinctly points anteriorly; as such, Platyscaphokogia n. gen. might be regarded as testifying an early stage in the evolution of the scaphokogiine cranial anatomy. Morphofunctional and palaeoecological considerations allow for hypothesising that Platyscaphokogia n. gen. was a raptorial physeteroid that foraged along the water column in relatively open-sea palaeoenvironments. In conclusion, our finds expand the palaeodiversity of Kogiidae, as well as our knowledge on the late Miocene sperm whales of the southeastern Pacific, and further suggest that the fossil content of the East Pisco Basin is crucial for reconstructing the Neogene evolutionary history of physeteroids. Article in Journal/Newspaper Sperm whale ARPI - Archivio della Ricerca dell'Università di Pisa Pacific Pisco ENVELOPE(-62.450,-62.450,-62.950,-62.950) Comptes Rendus Palevol 5 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Scaphokogiinae Pisco Formation East Pisco Basin Messinian new genus new species |
spellingShingle |
Scaphokogiinae Pisco Formation East Pisco Basin Messinian new genus new species COLLARETA, Alberto LAMBERT, Olivier MUIZON, Christian de BENITES PALOMINO, Aldo Marcelo URBINA, Mario BIANUCCI, Giovanni A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae) |
topic_facet |
Scaphokogiinae Pisco Formation East Pisco Basin Messinian new genus new species |
description |
Nowadays, the odontocete family Kogiidae is monotypic and only includes two species of diminutive relatives of the great sperm whale Physeter Linnaeus, 1758. Conversely, a growing body of extinct species indicates that kogiids were diverse and disparate during the late Neogene. The fossil record of Kogiidae is, to date, represented by several cranial specimens from Mio-Pliocene localities of the Northern Hemisphere, with the significant Southern Hemisphere exception of the Pisco Formation of Peru, from which two genera were known so far, including Scaphokogia Muizon, 1988, a highly idiosyncratic form characterised by a distinctly spoon-shaped dorsal surface of the neurocranium and a downturned semicylindrical rostrum, which is even placed in its own subfamily Scaphokogiinae. Here, we report on two skulls of Kogiidae from the Messinian (upper Miocene) portion of the Pisco Formation exposed in the East Pisco Basin. These two skulls are referred to the new taxon Platyscaphokogia landinii n. gen., n. sp., which our phylogenetic analysis recovers as sister group of Scaphokogia, within the subfamily Scaphokogiinae. Although Platyscaphokogia n. gen. shares with Scaphokogia a remarkably spoon-like dorsal aspect of the neurocranium, it retains a non-pachyostotic, dorsoventrally thin rostrum that distinctly points anteriorly; as such, Platyscaphokogia n. gen. might be regarded as testifying an early stage in the evolution of the scaphokogiine cranial anatomy. Morphofunctional and palaeoecological considerations allow for hypothesising that Platyscaphokogia n. gen. was a raptorial physeteroid that foraged along the water column in relatively open-sea palaeoenvironments. In conclusion, our finds expand the palaeodiversity of Kogiidae, as well as our knowledge on the late Miocene sperm whales of the southeastern Pacific, and further suggest that the fossil content of the East Pisco Basin is crucial for reconstructing the Neogene evolutionary history of physeteroids. |
author2 |
Collareta, Alberto Lambert, Olivier Muizon, Christian de BENITES PALOMINO, Aldo Marcelo Urbina, Mario Bianucci, Giovanni |
format |
Article in Journal/Newspaper |
author |
COLLARETA, Alberto LAMBERT, Olivier MUIZON, Christian de BENITES PALOMINO, Aldo Marcelo URBINA, Mario BIANUCCI, Giovanni |
author_facet |
COLLARETA, Alberto LAMBERT, Olivier MUIZON, Christian de BENITES PALOMINO, Aldo Marcelo URBINA, Mario BIANUCCI, Giovanni |
author_sort |
COLLARETA, Alberto |
title |
A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae) |
title_short |
A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae) |
title_full |
A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae) |
title_fullStr |
A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae) |
title_full_unstemmed |
A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae) |
title_sort |
new physeteroid from the late miocene of peru expands the diversity of extinct dwarf and pygmy sperm whales (cetacea: odontoceti: kogiidae) |
publishDate |
2020 |
url |
http://hdl.handle.net/11568/1070698 https://doi.org/10.5852/cr-palevol2020v19a5 https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/19/5 |
long_lat |
ENVELOPE(-62.450,-62.450,-62.950,-62.950) |
geographic |
Pacific Pisco |
geographic_facet |
Pacific Pisco |
genre |
Sperm whale |
genre_facet |
Sperm whale |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000575787800001 volume:19 issue:5 firstpage:79 lastpage:100 numberofpages:22 journal:COMPTES RENDUS PALEVOL http://hdl.handle.net/11568/1070698 doi:10.5852/cr-palevol2020v19a5 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85105000450 https://sciencepress.mnhn.fr/fr/periodiques/comptes-rendus-palevol/19/5 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5852/cr-palevol2020v19a5 |
container_title |
Comptes Rendus Palevol |
container_issue |
5 |
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1796298343063748608 |