PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Alphadon

Mammalia - Alphadontidae

Taxonomy

Alphadon was named by Simpson (1927). Its type is Alphadon marshi.

It was assigned to Didelphodontinae by Simpson (1927), Simpson (1929); to Thlaeodontinae by Hay (1930); to Didelphinae by Clemens (1979); to Alphadontinae by Johanson (1995); to Didelphidae by Sloan and Van Valen (1965), Lillegraven and McKenna (1986), McKenna and Bell (1997); to Peradectidae by Goin et al. (2006); to Alphadontidae by Johanson (1996), Kielan-Jaworowska et al. (2004), Davis (2007), Wilson et al. (2010); and to Metatheria by Williamson et al. (2012).

Species

A. attaragos, A. eatoni, A. halleyi, A. marshi (type species), A. perexiguus, A. sahnii, A. wilsoni

Synonymy list

Year	Name and author
1927	Alphadon Simpson p. 122
1929	Alphadon Simpson pp. 117, 126-127
1930	Alphodon Hay p. 391
1965	Alphadon Sloan and Van Valen p. 221
1979	Alphadon Clemens p. 193
1986	Alphadon Lillegraven and McKenna p. 27
1995	Alphadon Johanson p. 601
1996	Alphadon Johanson p. 1028
1997	Alphadon McKenna and Bell
2004	Alphadon Kielan-Jaworowska et al. pp. 443, 453-454 figs. 12.5B,C, 12.11A
2006	Alphadon Goin et al.
2007	Alphadon Davis p. 218
2010	Alphadon Wilson et al. p. 513
2012	Alphadon Williamson 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	()

Rank	Name	Author
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
subclass	Metatheria	()
—	Marsupialiformes
family	Alphadontidae	Marshall et al. 1990
genus	Alphadon

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. †Alphadon Simpson 1927

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†Alphadon attaragos Lillegraven and McKenna 1986

†Alphadon eatoni Cifelli and de Muizon 1998

†Alphadon halleyi Sahni 1972

†Alphadon marshi Simpson 1927

†Alphadon perexiguus Cifelli 1994

†Alphadon sahnii Lillegraven and McKenna 1986

†Alphadon wilsoni Lillegraven 1969

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialc

Locomotion:

actively mobilec

Life habit:

scansorialsubc

Diet:

omnivoreg

Reproduction:

viviparoussubc

Comments:

"an equally opportunistic, omnivorous marsupial" compared closely to Marmosa (whose diet "consists mainly of insects and fruits but also includes small rodents, lizards, and birds' eggs": Walker 1979)g

Created:

2005-09-07 09:56:57

Modified:

2011-04-27 20:01:30

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

References: Clemens 1979, Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Hopson 1973

Age range: base of the Middle Cenomanian to the top of the Ypresian or 100.50000 to 48.07000 Ma

Collections (93 total)

Time interval	Ma	Country or state	Original ID and collection number
Middle Cenomanian - Late/Upper Cenomanian	100.5 - 93.9	USA (Utah)	A. sp. (14385)
Santonian	85.7 - 83.6	USA (Montana)	A. halleyi (181582)
Late/Upper Santonian - Early/Lower Campanian	85.7 - 72.2	USA (Utah)	A. sp. (230871)
Early/Lower Campanian	83.6 - 72.2	USA (Utah)	A. attaragos, A. sahnii (14430)
Judithian	83.6 - 72.2	USA (Utah)	A. attaragos, A. sp. (14467) A. attaragos, A. wilsoni (14474 14475)
Judithian	83.6 - 72.2	USA (Wyoming)	A. attaragos, A. halleyi (14487) A. halleyi (14433 14458 14465) A. sahnii (14439 14440 14479 14480)
Judithian	83.6 - 72.2	USA (New Mexico)	A. sp., A. wilsoni (14464)
Judithian	83.6 - 72.2	USA (Texas)	A. halleyi, A. perexiguus (14489) A. sp., A. halleyi (14488)
Judithian	83.6 - 72.2	Canada (Alberta)	A. halleyi (14451)
Late/Upper Campanian	83.6 - 72.2	USA (Wyoming)	A. sahnii (70269 70453)
Late/Upper Campanian	83.6 - 72.2	USA (New Mexico)	A. marshi (36542) A. sp. (54101 56622 56627) A. sp., A. marshi (14498) A. sp., A. wilsoni (14436)
Late/Upper Campanian	83.6 - 72.2	USA (Utah)	A. halleyi (75836) A. halleyi, A. sahnii (14466)
Middle Campanian	83.6 - 72.2	USA (Montana)	A. halleyi (14453 14482)
Middle Campanian	83.6 - 72.2	USA (Utah)	A. sp. (61844)
Middle Campanian - Late/Upper Campanian	83.6 - 72.2	USA (Texas)	A. halleyi (68001) A. sp. (68003 68006 212186)
Middle Campanian - Late/Upper Campanian	83.6 - 72.2	USA (Montana)	A. attaragos, A. halleyi (14446) A. halleyi (14450 14459 14468 14470 14491 69161) A. sp. (14490) A. sp., A. halleyi (14461)
Middle Campanian - Late/Upper Campanian	83.6 - 72.2	Canada (Saskatchewan)	A. halleyi (14494)
Edmontonian	72.2 - 66.0	USA (New Mexico)	A. halleyi, A. wilsoni (14496)
Lancian	72.2 - 66.0	Canada (Alberta)	A. marshi (14632 14634) A. marshi, A. wilsoni (14630) A. wilsoni (14631)
Lancian	72.2 - 66.0	USA (New Mexico)	A. marshi (14573 14619)
Lancian	72.2 - 66.0	USA (Montana)	A. marshi (14516 14533 14535 14536 14546 14548 14549 14582 14616 14639 172642) A. marshi, A. wilsoni (14624 172644) A. sp. (14508 14556 14583) A. wilsoni (14617 14618 14649)
Lancian	72.2 - 66.0	USA (South Dakota)	A. marshi (14604 14612)
Lancian	72.2 - 66.0	USA (Wyoming)	A. marshi (14514 14519 14526 14538 14566 14596 14598)
Lancian	72.2 - 66.0	USA (Utah)	A. eatoni (14603) A. sp. (14599)
Lancian	72.2 - 66.0	Canada (Saskatchewan)	A. sp. (14655)
Late/Upper Maastrichtian	72.2 - 66.0	Canada (Saskatchewan)	A. sp. (54105)
Late/Upper Maastrichtian	72.2 - 66.0	USA (North Dakota)	A. marshi (45099) A. sp. (45137)
Late/Upper Maastrichtian	72.2 - 66.0	USA (Montana)	A. sp. (55326)
Late/Upper Maastrichtian	72.2 - 66.0	USA (Wyoming)	A. marshi (14585)
Late/Upper Maastrichtian	72.2 - 66.0	USA (New Mexico)	A. marshi (154429 154616)
Maastrichtian	72.2 - 66.0	Portugal (Coimbra)	A. sp. (49276)
Ypresian	56.0 - 48.07	Algeria	A. sp. (71984)