PBDB Taxon

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

Perasciuravus

Osteichthyes - Rodentia - Sciuridae

Taxonomy

Perasciuravus was named by Korth (2020). Its type is Perasciuravus mcintoshi.

It was assigned to Sciuridae by Korth (2020).

Species

P. mcintoshi (type species)

Synonymy list

Year	Name and author
2020	Perasciuravus Korth p. 197

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
class	Osteichthyes
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()

Rank	Name	Author
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Euarchontoglires	Murphy et al. 2001
—	Gliriformes	Wyss and Meng 1996
—	Glires	()
—	Simplicidentata	()
order	Rodentia
superfamily	Sciuroidea
family	Sciuridae
genus	Perasciuravus

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. †Perasciuravus Korth 2020

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†Perasciuravus mcintoshi Korth 2020

Diagnosis

Reference	Diagnosis
W. W. Korth 2020	Primitive characters (typical of sciuravids): small size, similar to that of species of Sciuravus Marsh, 1871; protrogomorphic zygomasseteric structure; cheek teeth brachydont; P3 present; hypocone on M1 and M2 large and crescentic; masseteric scar extends anteriorly to a point ventral to m2 on dentary; sharp ridge on dorsal margin of diastema; second mental foramen on dentary ventral to posterior root of p4. Derived characters (not found in other sciruavids): upper cheek teeth markedly higher-crowned lingually than buccally (unilateral mesodonty); protoloph and metaloph complete on upper molars; protocone on up- per molars transversely compressed (crescentic); endoloph on upper molars complete after moderate wear; ectolophid continuous between protoconid and hypoconid on lower cheek teeth; mesolophid present on lower molars.

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

scansorialf

Diet:

granivoref

Diet 2:

frugivoref

Reproduction:

viviparoussubc

Created:

2005-06-08 10:11:09

Modified:

2005-08-26 18:04:24

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

References: Carroll 1988, Ji et al. 2002, Lillegraven 1979, Hendy et al. 2009, Nowak 1991

Age range: Bridgerian or 51.10000 to 45.90000 Ma

Collections: one only

Time interval	Ma	Country or state	Original ID and collection number
Bridgerian	51.1 - 45.9	USA (Wyoming)	P. mcintoshi (type locality: 278701)