PBDB Taxon

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

Xenastrapotherium aequatorialis

Mammalia - Astrapotheria - Astrapotheriidae

Taxonomy

Xenastrapotherium aequatorialis was named by Johnson and Madden (1997) [Holotype: EPN(Q) 4280, a part of the right mandibular ramus preserving the posterior root of p4, m1-m2 nearly complete and the anterior alveolus of m3. Etymology: aequatorialis refers to the terrestrial equator, which bisects the country of origin.]. Its type specimen is EPN(Q) 4280, a mandible (a part of the right mandibular ramus preserving the posterior root of p4, m1-m2 nearly complete and the anterior alveolus of m3.), and it is a 3D body fossil.

Synonymy list

Year	Name and author
1997	Xenastrapotherium aequatorialis Johnson and Madden

Is something missing? Join the Paleobiology Database and enter the data

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	()

Rank	Name	Author
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Afrotheria	Stanhope et al. 1998
—	Paenungulatomorpha
—	Paenungulata	Simpson 1945
—	Sudamericungulata
order	Astrapotheria
family	Astrapotheriidae	Ameghino 1887
subfamily	Uruguaytheriinae
genus	Xenastrapotherium
species	aequatorialis

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.

†Xenastrapotherium aequatorialis Johnson and Madden 1997

show all | hide all

Diagnosis

Reference	Diagnosis
S. E. Johnson and R. H. Madden 1997	Xenastrapotherium aequatorialis differs from other known species of the genus (X. christi and X. kraglievich) in showing a remnant of either, the internal pillar or a short, lingually extended prehypocristid (anterior horn of the posterior crescent) fused to the distal aspect of the metalophid on m2, a rugose, continuos external cingulum on m1, an anteroexternal cingulim on m2, and a well-developed, "beaded" lingual cingulum continuos around the metalophid on m1 and m2

Measurements

No measurements are available

Composition:

phosphaticsubp

Body part:

Dentalg

Body mass source:

publishedg

Environment:

terrestrialg

Locomotion:

actively mobilec

Life habit:

cursorialg

Diet:

herbivoreg

Reproduction:

viviparoussubc

Created:

2013-05-18 03:16:16

Modified:

2013-05-17 12:16:16

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

References: Johnson and Madden 1997, Hendy et al. 2009, Ji et al. 2002, Lillegraven 1979, Carroll 1988

Age range: Aquitanian or 23.03000 to 20.44000 Ma

Collections: one only

Time interval	Ma	Country or state	Original ID and collection number
Aquitanian	23.03 - 20.44	Ecuador (Cañar)	Xenastrapotherium aequatorialis (144675)