PBDB Taxon

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

Gypsonictops lewisi

Mammalia - Gypsonictopidae

Taxonomy

Gypsonictops lewisi was named by Sahni (1972). Its type specimen is AMNH 77429, a tooth (isolated p4), and it is not a trace fossil. Its type locality is Clambank Hollow Quarry, which is in a Campanian/Campanian fine channel fill claystone in the Judith River Formation of Montana.

Synonymy list

Year	Name and author
1972	Gypsonictops lewisi Sahni
1979	Gypsonictops lewisi Kielan-Jaworowska et al. p. 223
1986	Gypsonictops lewisi Lillegraven and McKenna p. 38
2004	Gypsonictops lewisi Kielan-Jaworowska et al. pp. 494, 506

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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
—	Eutheria	()
superorder	Leptictida
family	Gypsonictopidae	Van Valen 1967
genus	Gypsonictops
species	lewisi

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.

†Gypsonictops lewisi Sahni 1972

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Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

ground dwellingf

Diet:

omnivoreg

Diet 2:

frugivoreg

Reproduction:

viviparoussubc

Created:

2005-09-07 09:35:30

Modified:

2005-09-07 11:35:30

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

References: Lillegraven 1979, Hendy et al. 2009, Kielan-Jaworowska et al. 2004, Kielan-Jaworowska et al. 1979, Carroll 1988, Ji et al. 2002

Age range: base of the Judithian to the top of the Edmontonian or 83.60000 to 66.00000 Ma

Collections (11 total)

Time interval	Ma	Country or state	Original ID and collection number
Judithian	83.6 - 72.2	Canada (Alberta)	Gypsonictops lewisi (14451 14463 14471 14485)
Judithian	83.6 - 72.2	USA (Wyoming)	Gypsonictops lewisi (14433 14458)
Late/Upper Campanian	83.6 - 72.2	Canada (Alberta)	Gypsonictops lewisi (45899)
Middle Campanian - Late/Upper Campanian	83.6 - 72.2	USA (Montana)	Gypsonictops lewisi (type locality: 14446 14461 14470)
Edmontonian	72.2 - 66.0	USA (New Mexico)	Gypsonictops lewisi (14496)