PBDB Taxon

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Diacodexis

Mammalia - Diacodexeidae

Taxonomy

Diacodexis was named by Cope (1882).

It was synonymized subjectively with Hyopsodus by Matthew (1899) and Hay (1902).

It was assigned to Artiodactyla by Cope (1882), Matthew (1915) and Carroll (1988); to Diacodexeinae by Krishtalka and Stucky (1985) and Erfurt and Sudre (1996); to Diacodexinae by Gazin (1955) and McKenna and Bell (1997); to Dichobunidae by Thewissen et al. (1987), Thewissen et al. (2001) and Thewissen et al. (2001); to Dichobunoidea by Boisserie et al. (2005); to Cetaceamorpha by Spaulding et al. (2009); and to Diacodexeidae by Theodor et al. (2007), Kumar et al. (2010) and Rose et al. (2012).

Species

D. antunesi, D. corsaensis, D. gazini, D. gigasei, D. gracilis, D. ilicis, D. indicus, D. kelleyi, D. metsiacus, D. minutus, D. morrisi, D. parvus, D. primus, D. secans (syn. D. olseni, Mioclaenus brachystomus, D. laticuneus), D. varleti

Species lacking formal opinion data

D. varleli

Synonyms

Trigonolestes was named by Cope (1894). Its type is Mioclaenus brachystomus.

It was synonymized subjectively with Diacodexis by Sinclair (1914), Matthew (1915), Krishtalka and Stucky (1985) and Stucky (1998).

It was assigned to Pantolestidae by Hay (1902); and to Trigonolestidae by Scott (1913).
Wasatchia was named by Sinclair (1914).

It was synonymized subjectively with Diacodexis by Guthrie (1968); it was synonymized subjectively with Bunophorus by Van Valen (1971), Stucky and Krishtalka (1990) and Stucky (1998).

It was assigned to Diacodexinae by Gazin (1955).

Synonymy list

Year	Name and author
1882	Diacodexis Cope
1894	Trigonolestes Cope
1902	Trigonolestes Hay p. 649
1913	Trigonolestes Scott p. 361
1914	Wasatchia Sinclair
1915	Diacodexis Matthew
1955	Diacodexis Gazin p. 44
1955	Wasatchia Gazin p. 44
1985	Diacodexis Krishtalka and Stucky
1986	Wasatchia Krishtalka and Stucky
1987	Diacodexis Thewissen et al. p. 249
1988	Diacodexis Carroll
1996	Diacodexis Erfurt and Sudre p. 375
1997	Diacodexis McKenna and Bell p. 401
2001	Diacodexis Thewissen et al. p. suppl.
2005	Diacodexis Boisserie et al.
2007	Diacodexis Theodor et al. p. 39
2009	Diacodexis Spaulding et al.
2010	Diacodexis Kumar et al. p. 1247
2012	Diacodexis Rose et al.

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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
—	Therapsida	()
infraorder	Cynodontia	()

Rank	Name	Author
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Theriamorpha	(Rowe 1993)
—	Theriiformes	()
—	Trechnotheria
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
—	Artiodactylamorpha
—	Artiodactyla	()
family	Diacodexeidae
genus	Diacodexis

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. †Diacodexis Cope 1882

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†Diacodexis antunesi Estravís and Russell 1989

†Diacodexis corsaensis Checa 2004

†Diacodexis gazini Godinot 1978

†Diacodexis gigasei Smith 1996

†Diacodexis gracilis Krishtalka and Stucky 1985

†Diacodexis ilicis Gingerich 1989

†Diacodexis indicus Bajpai et al. 2005

†Diacodexis kelleyi Krishtalka and Stucky 1985

†Diacodexis metsiacus Cope 1882

†Diacodexis minutus Krishtalka and Stucky 1985

†Diacodexis morrisi Hooker 2010

†Diacodexis parvus Kumar et al. 2010

†Diacodexis primus Krishtalka and Stucky 1985

†Diacodexis secans Cope 1881

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Invalid names: Diacodexis laticuneus Cope 1882 [synonym], Diacodexis olseni Sinclair 1914 [synonym], Mioclaenus brachystomus Cope 1882 [synonym]

†Diacodexis varleti Sudre 1983

Invalid names: Trigonolestes Cope 1894 [synonym], Wasatchia Sinclair 1914 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialo

Locomotion:

actively mobilec

Life habit:

ground dwellingg

Diet:

herbivoreg

Reproduction:

viviparoussubc

Comments:

"herbivorous/omnivorous" (Spaulding et al. 2009) and specialized for "cursorial-saltatorial locomotion" (Rose 1996)g

Created:

2005-08-31 14:10:21

Modified:

2011-04-24 18:45:24

Source: g = genus, o = order, subc = subclass, c = class, subp = subphylum

References: Hendy et al. 2009, Carroll 1988, Nowak 1999, Lillegraven 1979, Stucky 1998

Age range: base of the Wasatchian to the top of the Bridgerian or 55.80000 to 46.20000 Ma

Collections (386 total)

Time interval	Ma	Country or state	Original ID and collection number
Ypresian	56.0 - 47.8	France (Aude)	D. sp. (182641)
Ypresian	56.0 - 47.8	France (Marne)	D. varleti (35533 35535 35537 35540 181653)
Ypresian	56.0 - 47.8	Belgium (Hainaut)	D. gigasei (87947)
Ypresian	56.0 - 47.8	Kyrgyzstan (Osh)	D. sp. (28490)
Ypresian	56.0 - 47.8	United Kingdom (England)	D. morrisi (38868)
Ypresian	56.0 - 47.8	Belgium (Brabant)	D. gigasei (35531)
Ypresian	56.0 - 47.8	France (Provence-Alpes-Côte d'Azur)	D. gigasei (178050)
Ypresian	56.0 - 47.8	India (Gujarat)	Gujaratia indica, D. parvus (55494)
Ypresian	56.0 - 47.8	France (Oise)	D. sp. (68174)
Ypresian	56.0 - 47.8	France (Champagne-Ardenne)	D. varleti (28546 73387)
Ypresian	56.0 - 47.8	United Kingdom	D. sp. 1, D. sp. (87950)
Ypresian	56.0 - 47.8	France (Languedoc-Roussillon-Midi-Pyrénées)	D. gazini (179574)
Ypresian	56.0 - 47.8	Spain (Lleida)	D. sp. (142031)
Graybullian	55.8 - 50.3	USA (Wyoming)	D. metsiacus (15701) D. sp. (15875)
Lostcabinian	55.8 - 50.3	USA (Wyoming)	D. minutus, D. secans (15930) D. olseni (15915) D. secans (15917 15950 15997) D. secans, D. olseni (16073) D. sp., D. olseni (16078)
Lysitean	55.8 - 50.3	USA (Wyoming)	D. metsiacus (15880)
Wasatchian	55.8 - 50.3	USA (North Dakota)	D. sp. (15895)
Wasatchian	55.8 - 50.3	Mexico (Baja California)	D. sp. (15671)
Wasatchian	55.8 - 50.3	USA (Wyoming)	D. ilicis (15759 15817) D. kelleyi (15927 15928 15939 15940 15966 15967 15971 15973 15974 15976 15977 15980 16010) D. kellyi (15938 15981) D. metsiacus (15455 15482 15491 15493 15495 15503 15504 15505 15507 15509 15510 15511 15512 15513 15514 15515 15516 15517 15518 15519 15520 15522 15523 15524 15531 15532 15534 15536 15538 15540 15541 15542 15543 15544 15545 15546 15547 15548 15549 15551 15552 15553 15554 15555 15556 15558 15559 15560 15563 15564 15573 15575 15576 15577 15578 15586 15587 15588 15589 15592 15594 15631 15683 15687 15688 15692 15694 15695 15696 15697 15699 15702 15703 15704 15705 15707 15717 15723 15729 15756 15779 15793 15889 15912 15932 15933 15934 15964 16015 16017 16020 16024 16027 16032 16033 16055 46636 46640 46641 46642 46643 46644 46647 46648 46657 46659 46661 46672 46673 46680 46682 46683 46685 46686 46688 46690 46691 46692 46693 46694 46696 46697 46698 46699 46700 46701 46704 46706 46707 46709 46712 46713 46714 46715 46718 46721 46725 46726 46727 46728 46729 46730 46731 46732 46733 46734 46735 46736 46739 46743 46745 46746 46747 46748 46749 46753 46754 46756 46757 46759 46760 46761 46763 46765 46766 46767 46768 46770 46772 46773 46775 46776 46780 46782 46785 46786 46787 46788 46791 46792 46793 46794 46795 46797 46798 46800 46803 46804 46805 46806 46807 46808 46809 46810 46811 46813 46814 46815 46818 46819 46820 46821 46822 46825 46826 46828 46830 46831 46834 46835 46837 46838 46839 46843 46844 46845 46846 46847 46848 46849 168296) D. minutus, D. secans (15989) D. olseni (15908 15910 15943) D. primus (15465 15466 15624 15625 15626 15633 15634 15637 15638 15641 16007) D. secans (15468 15471 15478 15486 15662 15710 15839 15851 15852 15922 15946 15948 15949 15954 15962 15993 186931 186933 186944 186946 186952) D. secans, D. metsiacus (15557 15565 15566) D. secans, D. olseni (15942) D. sp. (15454 15462 15479 15724 15842 27268 46646 46751 46752)
Wasatchian	55.8 - 50.3	USA (Colorado)	D. kelleyi (15652) D. metsiacus (15222 15225 15315 15360 15365 15367 15371 15377 15386 15391 15450 15480 15485 15725 15845 15870 15873 15887) D. minutus (15650) D. secans (15224)
Wasatchian	55.8 - 50.3	USA (New Mexico)	D. metsiacus (15432 15433 15434 15663 15712) D. sp. (15441 15448)
Wasatchian	55.8 - 50.3	USA (Mississippi)	D. sp. (15719)
Early/Lower Eocene	55.8 - 48.6	USA (Wyoming)	D. ilicis (154251 154253 154255 154260 154262 154264 154270 154271 154274 154276 154280 154286) D. metsiacus (15679 15680 15684 15690 15691 15693)
Early/Lower Eocene	55.8 - 48.6	Spain (Lleida)	D. sp. (88345)
Early/Lower Eocene	55.8 - 48.6	France (Corbieres)	D. gazini (92838)
Early/Lower Eocene	55.8 - 48.6	France (Var)	D. sp., D. gazini (35538)
Early/Lower Eocene	55.8 - 48.6	Portugal (Região Centro)	D. antunesi (79200)
MP 10	55.8 - 48.6	France (Picardie)	D. varleti (68440)
MP 10	55.8 - 48.6	Spain (Catalonia)	D. sp. (182236)
MP 8 + 9	55.8 - 48.6	France	D. varleti (182640)
MP 8 + 9	55.8 - 48.6	France (Picardie)	D. varleti (84997)
Wasatchian - Bridgerian	55.8 - 46.2	USA (Wyoming)	D. secans (15669)
Bridgerian	50.3 - 46.2	USA (Wyoming)	D. minutus (16247) D. minutus, D. olseni (16207) D. minutus, D. secans (16246) D. secans (16137 16183 16439 16504) D. secans, D. olseni (16388) D. sp. (16204)
Lutetian	47.8 - 41.3	Pakistan	D. sp. (95149)
Lutetian	47.8 - 41.3	India (Jammu and Kashmir)	D. sp. (77524)
Lutetian	47.8 - 41.3	Germany (Sachsen-Anhalt)	D. varleli (44999)
Middle Eocene	47.8 - 37.71	USA (Wyoming)	D. minutus (118469)