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Desmostyloidea
Taxonomy
Desmostyloidea was named by Abel (1933).
It was considered a nomen oblitum by Domning (1996).
It was assigned to Multituberculata by Abel (1933); and to Desmostylia by Matsui and Tsuihiji (2019) and Matsui and Pyenson (2023).
It was considered a nomen oblitum by Domning (1996).
It was assigned to Multituberculata by Abel (1933); and to Desmostylia by Matsui and Tsuihiji (2019) and Matsui and Pyenson (2023).
Subtaxa
Synonymy list
Year | Name and author |
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1933 | Desmostyloidea Abel p. 875 |
2019 | Desmostyloidea Matsui and Tsuihiji p. 10 |
2023 | Desmostyloidea Matsui and Pyenson p. 4 |
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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.
Or. †Desmostyloidea Abel 1933
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Fm. †Desmostylidae Osborn 1905
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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]
Fm. †Paleoparadoxiidae Reinhart 1959
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G. †Neoparadoxia Barnes 2013
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†Neoparadoxia cecilialina Barnes 2013
†Neoparadoxia repenningi Domning and Barnes 2007
G. †Paleoparadoxia Reinhart 1959
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†Paleoparadoxia media Inuzuka 2005
†Paleoparadoxia tabatai Tokunaga 1939
Invalid names: Behemotopsinae Inuzuka 1987 [empty], Paleoparadoxiinae Reinhart 1959 [empty]
Diagnosis
Reference | Diagnosis | |
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K. Matsui and T. Tsuihiji 2019 | The clade consisting of Paleoparadoxiinae + Desmostylidae was supported by the absence of the p3 paraconid (c. 12(1)), fused double roots of p3 and p4 (c. 14(2)), swollen and appressed molar cusps (c. 17(1)), enlarged P4-M3 hypoconulid and entoconid (c. 18(1)) and having osteosclerosis bones of vertebrae (centrum) (c. 75(1)). |
Measurements
No measurements are available
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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 (163 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Rupelian | USA (Washington) | Desmostylidae indet. (58961) | |
Oligocene - Miocene | Japan (Hokkaido) | Desmostylus japonicus (91510 91512) | |
Arikareean | Mexico (Baja California Sur) | Cornwallius sookensis (90463) | |
Arikareean | USA (California) | Desmostylus hesperus (59072) | |
Arikareean - Hemingfordian | USA (Oregon) | Desmostylus hesperus (90464) | |
Late/Upper Oligocene | USA (Oregon) | Cornwallius sookensis (91211) | |
Late/Upper Oligocene | USA (Alaska) | Cornwallius sookensis (91213) | |
Chattian | Canada (British Columbia) | Cornwallius sookensis (91214) Desmostylus hesperus (63086) Desmostylus sookensis (63087) | |
Chattian | USA (Oregon) | Cornwallius sookensis (45782 45788) Paleoparadoxiidae indet. (202148) | |
Chattian | Japan (Hokkaido) | Ashoroa laticosta (58896) | |
Chattian | Mexico (Baja California Sur) | Cornwallius sookensis (66429) Cornwallius sp. (66427 66428) | |
Aquitanian | Japan (Hokkaido) | Paleoparadoxia sp. (171611 184791) | |
Aquitanian | USA (Washington) | Desmostylidae indet. (45481) | |
Aquitanian | USA (California) | Desmostylus sp., Paleoparadoxia weltoni, Desmostylus hesperus (58899) | |
Aquitanian | USA (Alaska) | Cornwallius sp. (67659) | |
Early/Lower Miocene | Japan (Fukushima) | Desmostylus japonicus (91522) Desmostylus sp. (28589) | |
Early/Lower Miocene | Japan (Hokkaido) | Desmostylus japonicus (91509) | |
Early/Lower Miocene | Japan (Miyagi) | Desmostylus japonicus (91519) | |
Early/Lower Miocene | Russian Federation (Sakhalin) | Desmostylus japonicus (91503 91504 91505) Desmostylus minor (91506) | |
Early/Lower Miocene | Japan (Gihu) | Mammalia indet. (91500) | |
Miocene | Japan (Toyama) | Paleoparadoxia tabatai (91475) | |
Miocene | Russian Federation (Sakhalin) | Desmostylus japonicus (91501) Desmostylus sp. (124918) | |
Miocene | Japan (Shimane) | Paleoparadoxia tabatai (186477) | |
Miocene | Japan (Teshio) | Desmostylus japonicus (151921) | |
Miocene | USA (California) | Desmostylus hesperus (91478 91480 91481 91486 91543 234513) Desmostylus sp. (91485) | |
Miocene | Japan (Akita) | Paleoparadoxia tabatai (186479) | |
Neogene | Japan (Hokkaido) | Desmostylus minor (101825) | |
Burdigalian | Japan (Gifu) | Paleoparadoxia tabatai (91465) | |
Burdigalian | Japan (Saitama) | Paleoparadoxia sp. (91601) | |
Burdigalian | Japan (Hokkaido) | Desmostylus japonicus (91507) | |
Burdigalian | USA (Oregon) | Desmostylus cymatias (107680) Desmostylus hesperus, Desmostylus cymatias (60339) Desmostylus sp. (18929) | |
Burdigalian | Japan (Okayama) | Paleoparadoxia tabatai (76044) | |
Burdigalian - Langhian | USA (California) | Desmostylus hesperus (159670) Paleoparadoxia sp., Desmostylus hesperus (52180) | |
Burdigalian - Langhian | Japan (Saitama) | Paleoparadoxia sp. (133498) Paleoparadoxia tabatai (56956) | |
Hemingfordian | USA (California) | Desmostylus hesperus (59073) | |
Barstovian | USA (California) | Desmostylus hesperus (91533 91534 91538 91539 91540 91541 91545) Desmostylus sp. (59074) Paleoparadoxia tabatai (19460) | |
Langhian - Burdigalian | Japan (Aomori) | Paleoparadoxia sp. (171802) | |
Langhian | Japan (Fukushima) | Paleoparadoxia sp. (96896) Paleoparadoxia tabatai (75740) | |
Langhian | Japan (Okayama) | Paleoparadoxia media (171034) | |
Langhian | Japan (Ishikawa) | Paleoparadoxia tabatai (91470) | |
Langhian | USA (California) | Desmostylus hesperus, Desmostylus japonicus (13297) Paleoparadoxia tabatai (59059) | |
Langhian | Japan (Hokkaido) | Desmostylus sp., Paleoparadoxia sp. (55652) | |
Langhian | Japan (Miyagi) | Paleoparadoxia tabatai (171612) | |
Langhian | Japan (Toyama) | Desmostylus japonicus (118942) | |
Langhian | Japan (Gunma) | Paleoparadoxia sp. (70548) Paleoparadoxia sp., Paleoparadoxia tabatai, Desmostylus japonicus (75729) | |
Langhian | Japan (Fukui) | Paleoparadoxia sp. (89036) | |
Langhian | Japan (Satiama Prevecture) | Desmostylus sp., Paleoparadoxia sp., Paleoparadoxia tabatai (55826) | |
Langhian | Mexico (Baja California) | Desmostylus sp., Desmostylus hesperus, Paleoparadoxidae indet. (52183) | |
Langhian | Japan (Satiyama) | Paleoparadoxia sp. (171617) | |
Langhian | Japan | Paleoparadoxia sp. (171613 171614 171621) Paleoparadoxia tabatai (93790 171620) | |
Langhian | Japan (Saitama) | Cornwallius sp. (171618) Paleoparadoxia tabatai (54183) | |
Langhian | Japan (Iwate) | Desmostylus sp. (172170) | |
Langhian - Serravallian | Mexico (Baja California Sur) | Desmostylus hesperus (13450) | |
Langhian - Serravallian | USA (California) | Desmostylus sp. (121152 225314) Desmostylus sp., Neoparadoxia cecillialina, Neoparadoxia cecilialina (151009) Desmostylus sp., Paleoparadoxia sp. (46069) Paleoparadoxia sp., Desmostylus hesperus (71072) | |
Langhian - Serravallian | Russian Federation (Kamchatka) | Desmostylus hesperus (59165) | |
Middle Miocene | Japan (Hokuriku) | Paleoparadoxia sp. (161492 161494) | |
Middle Miocene | Russian Federation (Sakhalinskaya) | Desmostylus mirabilis (70452) | |
Middle Miocene | Japan (Ishikawa) | Desmostylus japonicus (91524) Paleoparadoxia sp. (118412) | |
Middle Miocene | Japan (Shimane) | Desmostylus sp. (13068 102978) | |
Middle Miocene | Japan (Hokkaido) | Desmostylus japonicus (91508 91511 91513 91514 91515 91516) Desmostylus sp. (55921) | |
Middle Miocene | USA (California) | Desmostylia indet. (65985) Desmostylus hesperus (91479 91484 159600 159665 159666 159667 159668 159669 159671 159672) Paleoparadoxia sp. (65986) Paleoparadoxia tabatai (38027) Vanderhoofius coalingensis (40518) | |
Middle Miocene | Japan (Nagano) | Desmostylus hesperus (75730) | |
Middle Miocene | Japan (Iwate) | Desmostylus japonicus (91517 91518) Desmostylus japonicus, Desmostylella typica (46041) Desmostylus sp. (186478) | |
Middle Miocene | Russian Federation | Desmostylus hesperus (118952) | |
Middle Miocene | Japan (Akita) | Desmostylus japonicus (91521) | |
Middle Miocene | Japan | Dugong sp. (65168) | |
Middle Miocene | Japan (Fukushima) | Desmostylus sp. (186476) | |
Langhian - Tortonian | Mexico (Baja California Sur) | Paleoparadoxia sp. (57778) | |
Middle Miocene - Late/Upper Miocene | Japan | Paleoparadoxia tabatai (40519) | |
Serravallian | Mexico (Baja California) | Desmostylus sp. (57777) | |
Serravallian | USA (California) | Paleoparadoxia sp., Paleoparadoxia repenningi (75060) | |
Serravallian | Japan (Hokkaido) | Desmostylus sp. (72262) | |
Serravallian - Tortonian | USA (California) | Desmostylus hesperus (13093 40517 159596 159597 159598 159599 159673) Desmostylus sp. (176780) | |
Tortonian | USA (California) | Desmostylus sp., Desmostylus hesperus, Paleoparadoxia sp. (46070) Desmostylus sp., Paleoparadoxia sp. (40514) Paleoparadoxia tabatai (46071) | |
Tortonian | Japan (Gunma) | Paleoparadoxia sp. (200052) | |
Late/Upper Miocene | Japan (Toyama) | Desmostylus japonicus (91523 91526) | |
Late/Upper Miocene | Japan (Ishikawa) | Desmostylus japonicus (53883 91525) | |
Late/Upper Miocene | Japan (Hokkaido) | Desmostylus sp. (91625) | |
Late/Upper Miocene | USA (California) | Desmostylus sp. (162458) | |
Late/Upper Miocene | Japan | Desmostylus japonicus (51999 52000 52001) Paleoparadoxia tabatai (185111) | |
Late/Upper Miocene | Russian Federation (Sakhalin) | Desmostylus japonicus (91502) |