PBDB Taxon

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

Arfia opisthotoma

Mammalia - Creodonta - Hyaenodontidae

Taxonomy

Sinopa opisthotoma was named by Matthew (1901).

It was recombined as Arfia opisthotoma by Van Valen (1965), Bown (1979), Kihm (1984), Gingerich and Deutsch (1989), Polly (1993), Polly (1996), Gunnell (1998), Grohé et al. (2012), Solé et al. (2014), Borths et al. (2016).

Synonymy list

Year	Name and author
1901	Sinopa opisthotoma Matthew
1965	Arfia opisthotoma Van Valen
1979	Arfia opisthotoma Bown
1984	Arfia opisthotoma Kihm
1989	Arfia opisthotoma Gingerich and Deutsch
1993	Arfia opisthotoma Polly
1996	Arfia opisthotoma Polly
1998	Arfia opisthotoma Gunnell
2012	Arfia opisthotoma Grohé et al.
2014	Arfia opisthotoma Solé et al.
2016	Arfia opisthotoma Borths 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
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Ferae	()
order	Creodonta	()
order	Hyaenodonta	()
superfamily	Hyaenodontoidea	Leidy 1869
family	Hyaenodontidae	Leidy 1869
subfamily	Arfiinae	()
genus	Arfia
species	opisthotoma	(Matthew 1901)

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.

†Arfia opisthotoma Matthew 1901

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Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

ground dwellingg

Diet:

carnivoref

Reproduction:

viviparoussubc

Created:

2011-04-25 11:48:47

Modified:

2011-04-24 20:48:47

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

References: Lillegraven 1979, Carroll 1988, Gebo and Rose 1993, Gunnell 1998, Ji et al. 2002, Hendy et al. 2009

Age range: Wasatchian or 55.80000 to 50.30000 Ma

Collections (35 total)

Time interval	Ma	Country or state	Original ID and collection number
Wasatchian	55.8 - 50.3	USA (Colorado)	Arfia opisthotoma (15485)
Wasatchian	55.8 - 50.3	USA (Wyoming)	Arfia opisthotoma (15593 15695 15699 15702 15705 15741 15743 15744 15745 15757 15758 15776 15790 15799 15802 15807 46641 46698 46732 46733 46739 46753 46771 46776 46778 46789 46795 46797 46798 46800 46801 46809 46832 46840)