PBDB Taxon

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Thryptacodon

Mammalia - Procreodi - Arctocyonidae

Taxonomy

Thryptacodon was named by Matthew and Granger (1915). It is not extant. Its type is Thryptacodon antiquus.

It was assigned to Oxyclaenidae by Matthew and Granger (1915), Simpson (1928), Hay (1930); to Arctocyoninae by Archibald (1998); and to Arctocyonidae by McKenna and Bell (1997), Scott et al. (2002), Halliday et al. (2017).

Species

T. antiquus (syn. T. loisi) (type species), T. australis, T. barae, T. olseni, T. orthogonius (syn. T. demari, T. belli), T. pseudarctos

Synonymy list

Year	Name and author
1915	Thryptacodon Matthew and Granger
1928	Thryptacodon Simpson p. 10
1930	Thryptacodon Hay p. 462
1997	Thryptacodon McKenna and Bell
1998	Thryptacodon Archibald
2002	Thryptacodon Scott et al. p. 695
2017	Thryptacodon Halliday et al. p. 525

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida

Rank	Name	Author
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
order	Procreodi	Matthew 1915
family	Arctocyonidae	Murray 1866
genus	Thryptacodon

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.

G. †Thryptacodon Matthew and Granger 1915

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†Thryptacodon antiquus Matthew and Granger 1915

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Invalid names: Thryptacodon loisi Kelley and Wood 1954 [synonym]

†Thryptacodon australis Simpson 1935

†Thryptacodon barae Gingerich 1989

†Thryptacodon olseni Matthew and Granger 1915

†Thryptacodon orthogonius Russell 1929

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Invalid names: Thryptacodon belli Gazin 1956 [synonym], Thryptacodon demari Gazin 1956 [synonym]

†Thryptacodon pseudarctos Simpson 1928

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

ground dwellingf

Diet:

omnivoref

Reproduction:

viviparoussubc

Created:

2005-08-31 13:54:39

Modified:

2011-04-24 18:06:44

Source: f = family, subc = subclass, c = class, subp = subphylum

References: Carroll 1988, Archibald 1998, Lillegraven 1979, Hendy et al. 2009, Ji et al. 2002

Age range: base of the Torrejonian to the top of the Early/Lower Eocene or 63.80000 to 48.07000 Ma

Collections (160 total)

Time interval	Ma	Country or state	Original ID and collection number
Danian	66.0 - 61.66	USA (North Dakota)	T. australis (14962)
Torrejonian	63.8 - 60.9	USA (Wyoming)	Chriacus orthogonius (14880 14897 14898 14904 14905 14912)
Torrejonian - Tiffanian	63.8 - 56.2	USA (Wyoming)	T. sp. (14851)
Ti1	60.9 - 56.2	Canada (Alberta)	T. orthogonius (14939)
Ti3	60.9 - 56.2	Canada (Alberta)	T. australis (14928)
Ti4	60.9 - 56.2	Canada (Saskatchewan)	T. australis (14978)
Tiffanian	60.9 - 56.2	USA (Montana)	Chriacus orthogonius, T. demari (15025) T. australis (14937 15037 15064) T. sp. (15048)
Tiffanian	60.9 - 56.2	USA (California)	T. sp. (224203)
Tiffanian	60.9 - 56.2	USA (North Dakota)	T. australis (14931) T. sp., T. australis (15000)
Tiffanian	60.9 - 56.2	USA (Wyoming)	T. australis (14926 14936 14944 14952 14988 14999 15007 15017) T. australis, T. demari (14980 14997 15001) T. australis, T. pseudarctos (190410) T. belli, T. demari (14989) T. demari (14964 14981 14987) T. pseudarctos (15057 53059 190403 190405 190414 190418 190424 190445 190446 190468 190475 190493) T. sp. (15032 15034 15049)
Tiffanian	60.9 - 56.2	USA (Colorado)	T. australis (14967 174227)
Late/Upper Paleocene	59.24 - 56.0	USA (Wyoming)	T. australis (15018 15024)
Clarkforkian	56.2 - 54.9	USA (Montana)	T. pseudarctos (15079)
Clarkforkian	56.2 - 54.9	USA (Colorado)	T. australis (15241 15252 15258)
Clarkforkian	56.2 - 54.9	USA (Wyoming)	T. antiquus (15083 15084 15087 15091 15104 15110 15118 15132 15135 15148 15152 15166 15168 15171 15184 15185) T. antiquus, T. pseudarctos (15183) T. pseudarctos (15028 15089 190485) T. sp. (15075 15216 239208) T. sp., T. antiquus (15085)
Early/Lower Eocene	56.0 - 48.07	USA (Wyoming)	T. barae (27350)
Lostcabinian	54.9 - 50.5	USA (Wyoming)	T. loisi (15915 16076 16078)
Wasatchian	54.9 - 50.5	USA (Wyoming)	T. antiquus (15491 15493 15507 15510 15512 15514 15520 15522 15524 15531 15532 15544 15555 15573 15586 15588 15589 15592 15594 15662 15683 15694 15695 15699 15702 15705 15729 15756 15793 15934 46637 46639 46646 46650 46657 46659 46662 46673 46690 46693 46723 46726 46727 46766 46767 46768 46774 46780 46782 46785 46786 46792 46795 46801 46802 46803 46809 46813 46814 46816 46821 46823 46824 46831) T. barae (15458 15771) T. loisi (15548 15552 15563 15576 15964)
Wasatchian	54.9 - 50.5	USA (Colorado)	T. antiquus (15725 15845)
Bridgerian	50.5 - 46.2	USA (Wyoming)	T. loisi (16207)