PBDB Taxon

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

Paracimexomys

Mammalia - Multituberculata

Taxonomy

Paracimexomys was named by Archibald (1982). Its type is Cedaromys bestia.

It was assigned to Multituberculata by Archibald (1982), Lillegraven and McKenna (1986), McKenna and Bell (1997); to Cimolodonta by Eaton and Cifelli (2001); and to Cimolodonta by Kielan-Jaworowska and Hurum (2001), Kielan-Jaworowska et al. (2004), Eaton (2009), Hunter et al. (2010).

Species

P. crossi, P. magister, P. magnus, P. perplexus, P. priscus, P. propriscus, P. robisoni

Species lacking formal opinion data

P. robisonae

Synonymy list

Year	Name and author
1982	Paracimexomys Archibald
1986	Paracimexomys Lillegraven and McKenna p. 23
1997	Paracimexomys McKenna and Bell
2001	Paracimexomys Eaton and Cifelli p. 467
2001	Paracimexomys Kielan-Jaworowska and Hurum p. 416
2004	Paracimexomys Kielan-Jaworowska et al. pp. 254, 320-321 fig. 8.36D
2009	Paracimexomys Eaton
2010	Paracimexomys Hunter et al. p. 887

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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

Rank	Name	Author
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Allotheria	()
order	Multituberculata	Cope 1884
suborder	Cimolodonta	()
genus	Paracimexomys

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. †Paracimexomys Archibald 1982

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†Paracimexomys crossi Cifelli 1997

†Paracimexomys magister Fox 1971

†Paracimexomys magnus Sahni 1972

†Paracimexomys perplexus Eaton and Cifelli 2001

†Paracimexomys priscus Lillegraven 1969

†Paracimexomys propriscus Hunter et al. 2010

†Paracimexomys robisoni Eaton and Nelson 1991

Diagnosis

Reference	Diagnosis
J. G. Eaton and R. L. Cifelli 2001	Molars with generally smooth enamel and lacking complex pitting and ribbing, although occasional pits may be present, unlike cf. Paracimexomys and Eobaatar. M1 (formula 4-5:4-5:1-2) with a short third cusp row (absent on Cedaromys or Janumys), better developed than on Eobaatar, and not as broadened as in Bryceomys; external and medial cusp rows of M1 diverge anteriorly unlike Dakotamys. Cusps of first molars alternate position (unlike Cimexomys) and are not crescentic but may slant anteriorly (M1) or posteriorly (m1). m1 (formula 4-5:3-4) has a waist in occlusal view unlike Eobaatar and Dakotamys; m2 relatively long compared to width (LB:AP = 0.77-0.81) as in Eobaatar and Janumys, but proportionally longer than in Cedaromys and Bryceomys; second to first molar length ratio is ~0.9, greater than in Bryceomys, but similar to Dakotamys and Cedaromys, and less than Eobaatar or Janumys.

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialc

Locomotion:

actively mobilec

Life habit:

arborealo

Diet:

herbivoreo

Created:

2005-09-01 17:42:57

Modified:

2005-09-01 19:42:57

Source: o = order, c = class, subp = subphylum

References: Hopson 1973, Carroll 1988, Jenkins and Krause 1983, Hendy et al. 2009

Age range: base of the Albian to the top of the Lancian or 113.20000 to 66.00000 Ma

Collections (53 total)

Time interval	Ma	Country or state	Original ID and collection number
Aptian - Albian	121.4 - 100.5	USA (Wyoming)	P. sp. (137567 137577)
Late/Upper Aptian - Early/Lower Albian	119.57 - 110.1	USA (Oklahoma)	P. crossi (14392)
Late/Upper Aptian - Early/Lower Albian	119.57 - 110.1	USA (Texas)	Multituberculata indet. (14375) P. sp. (14388)
Albian	113.2 - 100.5	USA (Texas)	P. sp. (14411 14420)
Late/Upper Albian - Early/Lower Cenomanian	106.3 - 93.9	USA (Idaho)	P. perplexus (201911)
Early/Lower Cenomanian	100.5 - 93.9	USA (Utah)	P. perplexus (14396 14398 14402 14403) P. perplexus, P. robisoni (14399 14405) P. robisoni (14394 14406) P. robisoni, P. sp. B (14407) P. sp. A, P. robisonae, P. robisoni (14395)
Middle Cenomanian - Late/Upper Cenomanian	100.5 - 93.9	USA (Utah)	P. sp., Mammalia indet. (73433) P. sp., P. sp. (14383 14385)
Late/Upper Turonian	93.9 - 89.8	USA (Utah)	P. robisoni (14415)
Middle Turonian	93.9 - 89.8	USA (Utah)	P. robisoni (14416)
Middle Turonian - Late/Upper Turonian	93.9 - 89.8	USA (Utah)	P. robisoni (14414)
Coniacian - Santonian	89.8 - 83.6	USA (Utah)	P. sp. (14389)
Late/Upper Santonian	85.7 - 83.6	Canada (Alberta)	Cimexomys magister (14423 14425) P. magister (14428)
Late/Upper Santonian - Early/Lower Campanian	85.7 - 72.2	USA (Utah)	P. priscus (14413)
Early/Lower Campanian	83.6 - 72.2	USA (Utah)	P. sp. (14421 14429)
Judithian	83.6 - 72.2	USA (Wyoming)	P. priscus (14433)
Judithian	83.6 - 72.2	USA (Utah)	P. sp. (14474) P. sp. B, P. sp. C, P. magnus (14467)
Judithian	83.6 - 72.2	USA (Texas)	P. sp. (14488)
Judithian	83.6 - 72.2	USA (New Mexico)	P. sp. (14464)
Late/Upper Campanian	83.6 - 72.2	USA (Utah)	P. sp. (14466)
Middle Campanian	83.6 - 72.2	USA (Montana)	P. sp. (14453)
Middle Campanian - Late/Upper Campanian	83.6 - 72.2	USA (Texas)	P. sp. (68003 68004)
Middle Campanian - Late/Upper Campanian	83.6 - 72.2	USA (Montana)	Cimexomys magnus (14446) P. priscus (14470)
Edmontonian	72.2 - 66.0	USA (Montana)	P. priscus, P. robisoni (14503) P. propriscus (96603)
Lancian	72.2 - 66.0	USA (Montana)	P. priscus (14549) P. sp. (14568)
Lancian	72.2 - 66.0	Canada (Alberta)	Cimexomys priscus (14630 14631 14632)
Lancian	72.2 - 66.0	Canada (Saskatchewan)	P. priscus (14558 14655)
Lancian	72.2 - 66.0	USA (Utah)	P. sp. (14599)
Lancian	72.2 - 66.0	USA (Wyoming)	P. priscus (14514)