Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohors: Theria
Cohors: Eutheria
Infraclassis: Placentalia
Cladus: Boreoeutheria
Superordo: Laurasiatheria
Cladus: Scrotifera
Cladus: Ferungulata
Cladus: Euungulata
Ordo: Artiodactyla
Cladus: Artiofabula
Cladus: Cetruminantia
Subordo: Whippomorpha
Infraordo: Cetacea
Cladus: Neoceti
Parvordo: Odontoceti
Superfamilia: Lipotoidea
Familia: Lipotidae
Synonyms (1): ?Parapontoporiidae
Genera (3): Lipotes – †Parapontoporia – ?†Prolipotes
Name
Lipotidae Zhou, Qian & Li, 1978
References
Zhou, K.; Qian, W.; Li, Y. (1978). "Recent advances in the study of the baiji, Lipotes vexillifer". Journal of the Nanjing Normal College (Natural Science) (in Chinese) (1): 8–13.
Fordyce, E.; Perrin, W.F. (2023). "Lipotidae Zhou, Qian & Li, 1978". World Cetacea Database. Retrieved 2023-05-06 – via WoRMS.
Lipotidae is a family of river dolphins containing the possibly extinct baiji of China and the fossil genus Parapontoporia from the Late Miocene and Pliocene of the Pacific coast of North America.[1][2] The genus Prolipotes, which is based on a mandible fragment from Neogene coastal deposits in Guangxi, China,[3] has been classified as an extinct relative of the baiji, but is dubious.[4] The oldest known member of the family is Eolipotes from the Late Miocene of Japan.[5]
The only species of the Lipotidae family that has flourished until recent times is the Lipotes vexillifer, which lives in the Yangtze River system, but its population has declined drastically since the second half of the 20th century due to the severe aggression of industrial and fishing activities in China, and is thought to have become extinct in the early 21st century.[6]
The putative kentriodontid "Lophocetus" pappus is a possible relative of Lipotidae.[7]
Genera and Species
†(?) Lipotes
†(?) Lipotes vexillifer
†Parapontoporia
†P. pacifica
†P. sternbergi
†P. wilsoni
†Prolipotes
†P. yujiangensis
†Eolipotes
†E. japonicus
References
Barnes, L.G., 1984. Fossil odontocetes (Mammalia: Cetacea) from the Almejas Formation, Isla Cedros, Mexico. PaleoBios 42:1-46
L. G. Barnes. 1985. Fossil pontoporiid dolphins (Mammalia: Cetacea) from the Pacific Coast of North America. Contributions in Science 363:1-34.
K. Zhou, M. Zhou, and Z. Zhao. 1984. First discovery of a Tertiary platanistoid fossil from Asia. Scientific Reports of the Whales Research Institute 35:173-181.
N. D. Pyenson. 2009. Requiem for Lipotes: An evolutionary perspective on marine mammal extinction. Marine Mammal Evolution 25(3):714-724
Kimura, T.; Hasegawa, Y. (2024). "New Fossil Lipotid (Cetacea, Delphinida) from the Upper Miocene of Japan". Paleontological Research. 28 (4): 1–23. doi:10.2517/PR220027.
United States, National Marine Fisheries Service, Office of Protected Resources; Baiji/Chinese River Dolphin/Yangtze River dolphin (Lipotes vexillifer) 5-year review : summary and evaluation; 2017 https://repository.library.noaa.gov/view/noaa/16394
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. https://academic.oup.com/zoolinnean/article/179/4/919/3076080/A-new-inioid-Cetacea-Odontoceti-Delphinida-from?guestAccessKey=3b956b95-d215-488a-8d90-1cff59554290#63703008
https://nhpbs.org/wild/lipotidae.asp
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