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Desmostylus japonicus

Osteichthyes - Perissodactyla - Desmostylidae

Taxonomy
Desmostylus japonicus was named by Tokunaga and Iwasaki (1914). Its type specimen is NMNS PV-5600, a partial skull, and it is a 3D body fossil. Its type locality is Bogahora Valley, which is in a Miocene marine horizon in the Akeyo Formation of Japan.

It was synonymized subjectively with Desmostylus hesperus by VanderHoof (1937), Reinhart (1959), Dubrovo and Sinel'nikova (1971), Domning (1996); it was recombined as Desmostylus hesperus japonicus by Shikama (1966), Kamei and Okazaki (1974), Hasegawa et al. (1995).

Synonymy list
YearName and author
1914Desmostylus japonicus Tokunaga and Iwasaki
1966Desmostylus hesperus japonicus Shikama p. 161
1974Desmostylus hesperus japonicus Kamei and Okazaki p. 265
1995Desmostylus hesperus japonicus Hasegawa et al. p. 5
2000Desmostylus japonicus Kohno p. 148
2009Desmostylus japonicus Sakurai p. 22
2019Desmostylus japonicus Matsui and Tsuihiji

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
RankNameAuthor
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
orderDesmostylia
orderDesmostyloideaAbel 1933
familyDesmostylidae
genusDesmostylus
speciesjaponicus

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Desmostylus japonicus Tokunaga and Iwasaki 1914
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatiteo
Ontogeny: modification of partso
Environment: coastalo
Locomotion: actively mobileo
Life habit: amphibiouso
Diet: herbivoreo
Reproduction: viviparouso
Created: 2005-09-11 17:03:02
Modified: 2019-05-28 17:19:55
Source: o = order
Reference: Domning et al. 1986

Age range: base of the Burdigalian to the top of the Late/Upper Miocene or 20.45000 to 5.33300 Ma

Collections (35 total)


Time interval Ma Country or state Original ID and collection number
Oligocene - Miocene33.9 - 5.333Japan (Hokkaido) Desmostylus japonicus (91510 91512)
Early/Lower Miocene23.04 - 15.98Japan (Fukushima) Desmostylus japonicus (91522)
Early/Lower Miocene23.04 - 15.98Japan (Miyagi) Desmostylus japonicus (91519)
Early/Lower Miocene23.04 - 15.98Japan (Gihu) Mammalia indet. (type locality: 91500)
Early/Lower Miocene23.04 - 15.98Japan (Hokkaido) Desmostylus japonicus (91509)
Early/Lower Miocene23.04 - 15.98Russian Federation (Sakhalin) Desmostylus japonicus (91503 91504 91505)
Miocene23.04 - 5.333Russian Federation (Sakhalin) Desmostylus japonicus (91501)
Miocene23.04 - 5.333Japan (Teshio) Desmostylus japonicus (151921)
Burdigalian20.45 - 15.98Japan (Hokkaido) Desmostylus japonicus (91507)
Langhian15.98 - 13.82Japan (Toyama) Desmostylus japonicus (118942)
Langhian15.98 - 13.82USA (California) Desmostylus japonicus (13297)
Langhian15.98 - 13.82Japan (Gunma) Desmostylus japonicus (75729)
Middle Miocene15.98 - 11.63Japan (Iwate) Desmostylus japonicus (46041 91517 91518)
Middle Miocene15.98 - 11.63Japan (Hokkaido) Desmostylus japonicus (91508 91511 91513 91514 91515 91516)
Middle Miocene15.98 - 11.63Japan (Ishikawa) Desmostylus japonicus (91524)
Middle Miocene15.98 - 11.63Japan (Akita) Desmostylus japonicus (91521)
Middle Miocene15.98 - 11.63Japan (Nagano) Desmostylus hesperus (75730)
Late/Upper Miocene11.63 - 5.333Japan Desmostylus japonicus (51999 52000 52001)
Late/Upper Miocene11.63 - 5.333Japan (Toyama) Desmostylus japonicus (91523 91526)
Late/Upper Miocene11.63 - 5.333Russian Federation (Sakhalin) Desmostylus japonicus (91502)
Late/Upper Miocene11.63 - 5.333Japan (Ishikawa) Desmostylus japonicus (53883 91525)