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Desmostylidae

Mammalia - Perissodactyla - Desmostylidae

Synonymy list
YearName and author
1905Desmostylidae Osborn p. 109
1915Desmostylidae Hay p. 385
1919Desmostylidae Abel p. 830
1932Desmostylidae Simpson p. 425
1937Desmostylidae VanderHoof p. 189
1941Desmostylidae Kretzoi p. 155
1942Desmostylidae VanderHoof p. 301
1957Desmostylidae Pronina p. 312
1959Desmostylidae Reinhart p. 65
1966Desmostylidae Shikama p. 156
1988Desmostylidae Carroll
1995Desmostylidae Inuzuka et al. p. 524
1997Desmostylidae McKenna and Bell p. 375
2000Desmostylidae Inuzuka p. 93
2001Desmostylidae Barnes and Goedert p. 18
2002Desmostylidae Rice p. 232 figs. Table 1
2009Desmostylidae Rice p. 235 figs. Table 1
2011Desmostylidae Boessenecker p. 2
2017Desmostylidae Matsui p. 2
2018Desmostylidae Domning p. 251
2019Desmostylidae Matsui and Tsuihiji p. 10
2023Desmostylidae Matsui and Pyenson p. 4

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

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.

Fm. †Desmostylidae Osborn 1905
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G. †Ashoroa Inuzuka 2000
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†Ashoroa laticosta Inuzuka 2000
G. †Cornwallius Hay 1923
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†Cornwallius sookensis Cornwall 1922
G. †Desmostylus Marsh 1888
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†Desmostylus hesperus Marsh 1888
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Invalid names: Desmostylella typica Nagao 1937 [synonym], Desmostylus californicus Hay 1923 [synonym], Desmostylus cymatias Hannibal 1922 [synonym], Desmostylus minor Nagao 1937 [synonym], Desmostylus mirabilis Nagao 1935 [synonym], Desmostylus watasei Hay 1915 [synonym]
†Desmostylus japonicus Tokunaga and Iwasaki 1914
Invalid names: Desmostylella Nagao 1937 [synonym]
G. †Ounalashkastylus Chiba et al. 2016
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†Ounalashkastylus tomidai Chiba et al. 2016
G. †Vanderhoofius Reinhart 1959
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†Vanderhoofius coalingensis Reinhart 1959
Diagnosis
ReferenceDiagnosis
K. Matsui and T. Tsuihiji 2019the presence of seven or more cusps on M3 (c. 29(1)), conical and tusk-like lower incisors (c. 32( 2)), no passage anterior to the external auditory meatus connecting to the skull roof (c. 37(1)), presence of an anterior orbital groove (c. 46(1)), having cancellous bones of vertebrae (centrum) (c. 75(3)) and shallow and wide shape of intertubercular groove in humweus(c. 93(2)).
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 Late/Upper Oligocene to the top of the Tortonian or 28.40000 to 7.24600 Ma

Collections (120 total)


Time interval Ma Country or state Original ID and collection number
Rupelian33.9 - 28.1USA (Washington) Desmostylidae indet. (58961)
Oligocene - Miocene33.9 - 5.333Japan (Hokkaido) Desmostylus japonicus (91510 91512)
Arikareean29.5 - 18.5USA (California) Desmostylus hesperus (59072)
Arikareean29.5 - 18.5Mexico (Baja California Sur) Cornwallius sookensis (90463)
Arikareean - Hemingfordian29.5 - 15.97USA (Oregon) Desmostylus hesperus (90464)
Late/Upper Oligocene28.4 - 23.03USA (Alaska) Cornwallius sookensis (91213)
Late/Upper Oligocene28.4 - 23.03USA (Oregon) Cornwallius sookensis (91211)
Chattian28.1 - 23.03Canada (British Columbia) Cornwallius sookensis (91214) Desmostylus hesperus (63086) Desmostylus sookensis (63087)
Chattian28.1 - 23.03USA (Oregon) Cornwallius sookensis (45782 45788)
Chattian28.1 - 23.03Mexico (Baja California Sur) Cornwallius sookensis (66429) Cornwallius sp. (66427 66428)
Chattian28.1 - 23.03Japan (Hokkaido) Ashoroa laticosta (58896)
Aquitanian23.03 - 20.44USA (California) Desmostylus sp., Desmostylus hesperus (58899)
Aquitanian23.03 - 20.44USA (Alaska) Cornwallius sp. (67659)
Aquitanian23.03 - 20.44USA (Washington) Desmostylidae indet. (45481)
Early/Lower Miocene23.03 - 15.97Japan (Hokkaido) Desmostylus japonicus (91509)
Early/Lower Miocene23.03 - 15.97Japan (Miyagi) Desmostylus japonicus (91519)
Early/Lower Miocene23.03 - 15.97Japan (Gihu) Mammalia indet. (91500)
Early/Lower Miocene23.03 - 15.97Russian Federation (Sakhalin) Desmostylus japonicus (91503 91504 91505) Desmostylus minor (91506)
Early/Lower Miocene23.03 - 15.97Japan (Fukushima) Desmostylus japonicus (91522) Desmostylus sp. (28589)
Miocene23.03 - 5.333Japan (Teshio) Desmostylus japonicus (151921)
Miocene23.03 - 5.333Russian Federation (Sakhalin) Desmostylus japonicus (91501) Desmostylus sp. (124918)
Miocene23.03 - 5.333USA (California) Desmostylus hesperus (91478 91480 91481 91486 91543 234513) Desmostylus sp. (91485)
Neogene23.03 - 2.58Japan (Hokkaido) Desmostylus minor (101825)
Burdigalian20.44 - 15.97Japan (Hokkaido) Desmostylus japonicus (91507)
Burdigalian20.44 - 15.97USA (Oregon) Desmostylus cymatias (107680) Desmostylus hesperus, Desmostylus cymatias (60339) Desmostylus sp. (18929)
Burdigalian - Langhian20.44 - 13.82USA (California) Desmostylus hesperus (52180 159670)
Hemingfordian20.43 - 15.97USA (California) Desmostylus hesperus (59073)
Barstovian16.3 - 12.5USA (California) Desmostylus hesperus (91533 91534 91538 91539 91540 91541 91545) Desmostylus sp. (59074)
Langhian15.97 - 13.82Mexico (Baja California) Desmostylus sp., Desmostylus hesperus (52183)
Langhian15.97 - 13.82Japan (Toyama) Desmostylus japonicus (118942)
Langhian15.97 - 13.82Japan (Hokkaido) Desmostylus sp. (55652)
Langhian15.97 - 13.82Japan (Gunma) Desmostylus japonicus (75729)
Langhian15.97 - 13.82Japan (Satiama Prevecture) Desmostylus sp. (55826)
Langhian15.97 - 13.82USA (California) Desmostylus hesperus, Desmostylus japonicus (13297)
Langhian - Serravallian15.97 - 11.62Mexico (Baja California Sur) Desmostylus hesperus (13450)
Langhian - Serravallian15.97 - 11.62Russian Federation (Kamchatka) Desmostylus hesperus (59165)
Langhian - Serravallian15.97 - 11.62USA (California) Desmostylus hesperus (71072) Desmostylus sp. (46069 121152 151009 225314)
Middle Miocene15.97 - 11.608Japan (Hokkaido) Desmostylus japonicus (91508 91511 91513 91514 91515 91516) Desmostylus sp. (55921)
Middle Miocene15.97 - 11.608Russian Federation (Sakhalinskaya) Desmostylus mirabilis (70452)
Middle Miocene15.97 - 11.608Japan (Shimane) Desmostylus sp. (13068 102978)
Middle Miocene15.97 - 11.608Japan (Nagano) Desmostylus hesperus (75730)
Middle Miocene15.97 - 11.608USA (California) Desmostylus hesperus (91479 91484 159600 159665 159666 159667 159668 159669 159671 159672) Vanderhoofius coalingensis (40518)
Middle Miocene15.97 - 11.608Japan (Ishikawa) Desmostylus japonicus (91524)
Middle Miocene15.97 - 11.608Japan (Fukushima) Desmostylus sp. (186476)
Middle Miocene15.97 - 11.608Russian Federation Desmostylus hesperus (118952)
Middle Miocene15.97 - 11.608Japan (Iwate) Desmostylus japonicus (91517 91518) Desmostylus japonicus, Desmostylella typica (46041) Desmostylus sp. (186478)
Middle Miocene15.97 - 11.608Japan (Akita) Desmostylus japonicus (91521)
Serravallian13.82 - 11.62Japan (Hokkaido) Desmostylus sp. (72262)
Serravallian13.82 - 11.62Mexico (Baja California) Desmostylus sp. (57777)
Serravallian - Tortonian13.82 - 7.246USA (California) Desmostylus hesperus (13093 40517 159596 159597 159598 159599 159673) Desmostylus sp. (176780)
Tortonian11.62 - 7.246USA (California) Desmostylus sp. (40514) Desmostylus sp., Desmostylus hesperus (46070)
Late/Upper Miocene11.608 - 5.333Japan Desmostylus japonicus (51999 52000 52001)
Late/Upper Miocene11.608 - 5.333Japan (Hokkaido) Desmostylus sp. (91625)
Late/Upper Miocene11.608 - 5.333Japan (Toyama) Desmostylus japonicus (91523 91526)
Late/Upper Miocene11.608 - 5.333Japan (Ishikawa) Desmostylus japonicus (53883 91525)
Late/Upper Miocene11.608 - 5.333USA (California) Desmostylus sp. (162458)
Late/Upper Miocene11.608 - 5.333Russian Federation (Sakhalin) Desmostylus japonicus (91502)