PBDB Taxon

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

Nimravus

Mammalia - Carnivora - Nimravidae

Taxonomy

Nimravus was named by Cope (1879) [status called into question by Bryant 1996]. It is not extant. Its type is Machaerodus brachyops.

It was assigned to Machairodontinae by Hay (1902); to Nimravinae by Flynn and Galiano (1982), Bryant (1991), Hunt (1998), Peigné (2003) and Slater and Van Valkenburgh (2008); to Nimravini by Barrett (2016); and to Nimravidae by Cope (1879), Cope (1880), Martin (1998) and de Bonis et al. (2019).

Species

N. brachyops (syn. Dinictis major, N. altidens, N. gomphodus, Archaelurus debilis, N. confertus, N. bumpensis, N. meridianus, N. sectator), N. intermedius, N. mongoliensis

Synonyms

Nimravinus was named by Kretzoi (1945).

It was synonymized subjectively with Nimravus by Peigné (2003).
Archaelurus was named by Cope (1879).

It was synonymized subjectively with Nimravus by Adams (1897), Matthew (1910), Piveteau (1932), Toohey (1959), Bryant (1996) and Barrett (2016).

It was assigned to Felidae by Cope (1879); to Nimravidae by Cope (1880); and to Machairodontinae by Hay (1902).

Synonymy list

Year	Name and author
1879	Nimravus Cope
1879	Archaelurus Cope p. 798a
1880	Archaelurus Cope p. 836
1880	Nimravus Cope p. 836
1902	Archaelurus Hay p. 781
1902	Nimravus Hay p. 781
1929	Archaelurus Kretzoi
1936	Archaelurus Scott and Jepsen
1945	Nimravinus Kretzoi
1945	Archaelurus Simpson
1982	Nimravus Flynn and Galiano p. 53
1991	Nimravus Bryant p. 69
1998	Nimravus Hunt, Jr. p. 230
1998	Nimravus Martin
2003	Nimravus Peigné
2008	Nimravus Slater and Van Valkenburgh p. 407
2016	Nimravus Barrett
2019	Nimravus de Bonis 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	()
—	Carnivoramorpha	Wyss and Flynn 1993
—	Carnivoraformes	Flynn et al.
order	Carnivora
suborder	Feliformia	Kretzoi 1945
family	Nimravidae	Cope 1880
tribe	Nimravini
genus	Nimravus	Cope 1879

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. †Nimravus Cope 1879

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†Nimravus brachyops Cope 1878

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Invalid names: Archaelurus debilis Cope 1879 [synonym], Dinictis major Lucas 1898 [synonym], Nimravus altidens Macdonald 1950 [synonym], Nimravus bumpensis Scott and Jepsen 1936 [synonym], Nimravus confertus Cope 1880 [synonym], Nimravus gomphodus Cope 1880 [synonym], Nimravus meridianus Stock 1933 [synonym], Nimravus sectator Matthew 1907 [synonym]

†Nimravus intermedius Filhol 1872

†Nimravus mongoliensis Gromova 1959

Invalid names: Archaelurus Cope 1879 [synonym], Nimravinus Kretzoi 1945 [synonym]

Diagnosis

Reference	Diagnosis
P. Z. Barrett 2016	Sutural contact between the lacrimal and jugal; presence of lateral and medial fossae on the zygomata; broadly circular zygomata in dorsal view; presence of discrete petrobasilar and posterior lacerate foramina; postglenoid foramen present; reduced mastoid with large plate-like paroccipital process; posterior lip of the glenoid socket projects more ventrally than anterior lip; oblique angle between the braincase and axial plane of the cranium; horizontally projecting postorbital process of frontal; posteriorly orientated posterior border of coronoid process; no genial flange, but the ventral rim of the chin is distinctly angulate; presence of fossa on ventral face of chin; spatulated incisors, with accessory denticles especially on the lower incisors, I3 slightly caniniform and distinctly larger than the other incisors; mesial-distal length of C1 less than that of P4; ratio of height of P3–P4, 0.71 and greater; parastyle absent from P4; P4 protocone reduced, short, crest-like; M1 transversely reduced, crest-like, with low cusps and near absent to absent protocone; lower incisor arcade not or little curved, so as i1 is not visible in lateral view; p3 height is as tall or slightly taller than p4; anterior cusp on p4 mesially/distally longer than the posterior cusp; p4 as tall as or taller than the paraconid of m1; m1 metaconid absent; trigonid proportion of m1 is 77–87%; serrations absent on adult minimally worn cheek teeth; ratio of tibia to femur 87% and higher; articulation between the calcaneum and navicular present.