The type species, Atocetus iquensis, is known from Serravallian-age strata of the Pisco Formation of Peru,[2] while A. nasalis is known from Tortonian-age marine deposits in California.[3] Barnes (1985) originally described the latter as a species of Pithanodelphis, but it was eventually transferred to Atocetus by Muizon (1988). The Miocene delphinidan "Champsodelphis" fuchsii from marine deposits in Austria was initially tentatively referred to Atocetus based on the discovery of partial skeletons from the Carpathian region with earbones similar to those of Atocetus but was eventually re-assigned to Kentriodon following the discovery of additional earbones from Austria and Romania.[4][5]
Phylogeny
Although Atocetus and other pithanodelphinines are usually assigned to Kentriodontidae, the cladistic analysis of Lambert et al. (2017) showed that Atocetus and Pithanodelphis form a clade with Tagicetus and Lophocetus that is not only phylogenetically more derived than other kentriodontids but is also phylogenetically intermediate between the baiji and members of Inioidea and Phocoenidae.[6] However, a subsequent cladistic analysis by Post et al. (2017) recovers Atocetus as a member of Pontoporiidae, which includes the franciscana.[7]
^Ichishima, H.; Barnes, L. G.; Fordyce, R. E.; Kimura, M.; Bohaska, D. J. (1994). "A review of kentriodontine dolphins (Cetacea; Deiphinoidea; Kentriodontidae): Systematics and biogeography". The Island Arc. 3 (4): 486. doi:10.1111/j.1440-1738.1994.tb00127.x.
^L. G. Barnes. 1985. The Late Miocene dolphin Pithanodelphis Abel, 1905 (Cetacea: Kentriodontidae) from California. Contributions in Science 367:1-27.
^E. Kazár, M. Vremir, and V. Codrea. 2004. Dolphin remains (Cetacea: Odontoceti) from the middle Miocene of Cluj-napoca, Romania. Acta Paleontologica Romanie 4:179-189.
^E. Kazár. 2006. Odontocete periotics (Mammalia: Cetacea) from the Carpathian Basin, Middle Miocene (Badenian and Sarmatian Stages), including the Vienna Basin, Austria. Beitrage zur Palaontologie 30:269-292.
^Olivier Lambert, Giovanni Bianucci, Mario Urbina, Jonathan H. Geisler; A new inioid (Cetacea, Odontoceti, Delphinida) from the Miocene of Peru and the origin of modern dolphin and porpoise families. Zool J Linn Soc 2017; 179 (4): 919-946. doi: 10.1111/zoj.12479
^Post K, Louwye S, Lambert O. (2017) Scaldiporia vandokkumi, a new pontoporiid (Mammalia, Cetacea, Odontoceti) from the Late Miocene to earliest Pliocene of the Westerschelde estuary (The Netherlands) PeerJ 5:e3991 https://doi.org/10.7717/peerj.3991
Bibliography
De Muizon, C. 1988. Les Vertébrés fossiles de la Formation Pisco (Pérou). Troisième partie: Les Odontocètes (Cetacea, Mammalia) du Miocène. Editions Recherche sur les Civilisations 78. 1–244. Accessed 2019-03-13.
This prehistoric cetacean-related article is a stub. You can help Wikipedia by expanding it.
atocetus, extinct, genus, pontoporiid, dolphin, found, miocene, marine, deposits, peru, california, temporal, range, late, miocene, preꞒ, nskull, iquensisscientific, classificationkingdom, animaliaphylum, chordataclass, mammaliaorder, artiodactylainfraorder, c. Atocetus is an extinct genus of pontoporiid dolphin found in Miocene age marine deposits in Peru and California 1 AtocetusTemporal range Mid Late Miocene 13 7 Ma PreꞒ Ꞓ O S D C P T J K Pg NSkull of A iquensisScientific classificationKingdom AnimaliaPhylum ChordataClass MammaliaOrder ArtiodactylaInfraorder CetaceaFamily KentriodontidaeSubfamily PithanodelphininaeGenus AtocetusDe Muizon 1988SpeciesA iquensis De Muizon 1988 type A nasalis Barnes 1985 Contents 1 Description 2 Phylogeny 3 References 3 1 BibliographyDescription Edit Fossil flipper The type species Atocetus iquensis is known from Serravallian age strata of the Pisco Formation of Peru 2 while A nasalis is known from Tortonian age marine deposits in California 3 Barnes 1985 originally described the latter as a species of Pithanodelphis but it was eventually transferred to Atocetus by Muizon 1988 The Miocene delphinidan Champsodelphis fuchsii from marine deposits in Austria was initially tentatively referred to Atocetus based on the discovery of partial skeletons from the Carpathian region with earbones similar to those of Atocetus but was eventually re assigned to Kentriodon following the discovery of additional earbones from Austria and Romania 4 5 Phylogeny EditAlthough Atocetus and other pithanodelphinines are usually assigned to Kentriodontidae the cladistic analysis of Lambert et al 2017 showed that Atocetus and Pithanodelphis form a clade with Tagicetus and Lophocetus that is not only phylogenetically more derived than other kentriodontids but is also phylogenetically intermediate between the baiji and members of Inioidea and Phocoenidae 6 However a subsequent cladistic analysis by Post et al 2017 recovers Atocetus as a member of Pontoporiidae which includes the franciscana 7 References Edit Cetaceans portal Paleontology portal Ichishima H Barnes L G Fordyce R E Kimura M Bohaska D J 1994 A review of kentriodontine dolphins Cetacea Deiphinoidea Kentriodontidae Systematics and biogeography The Island Arc 3 4 486 doi 10 1111 j 1440 1738 1994 tb00127 x De Muizon 1988 p 131 L G Barnes 1985 The Late Miocene dolphin Pithanodelphis Abel 1905 Cetacea Kentriodontidae from California Contributions in Science 367 1 27 E Kazar M Vremir and V Codrea 2004 Dolphin remains Cetacea Odontoceti from the middle Miocene of Cluj napoca Romania Acta Paleontologica Romanie 4 179 189 E Kazar 2006 Odontocete periotics Mammalia Cetacea from the Carpathian Basin Middle Miocene Badenian and Sarmatian Stages including the Vienna Basin Austria Beitrage zur Palaontologie 30 269 292 Olivier Lambert Giovanni Bianucci Mario Urbina Jonathan H Geisler A new inioid Cetacea Odontoceti Delphinida from the Miocene of Peru and the origin of modern dolphin and porpoise families Zool J Linn Soc 2017 179 4 919 946 doi 10 1111 zoj 12479 Post K Louwye S Lambert O 2017 Scaldiporia vandokkumi a new pontoporiid Mammalia Cetacea Odontoceti from the Late Miocene to earliest Pliocene of the Westerschelde estuary The Netherlands PeerJ 5 e3991 https doi org 10 7717 peerj 3991 Bibliography Edit De Muizon C 1988 Les Vertebres fossiles de la Formation Pisco Perou Troisieme partie Les Odontocetes Cetacea Mammalia du Miocene Editions Recherche sur les Civilisations 78 1 244 Accessed 2019 03 13 This prehistoric cetacean related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Atocetus amp oldid 1066263545, wikipedia, wiki, book, books, library,
