PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Baltemys staurogastros

Reptilia - Testudines - Kinosternoidea

Taxonomy

Baltemys staurogastros was named by Hutchison (1991) [also present at 21 other undescribed UCMP Willwood Formation collections]. Its type specimen is UCMP 127200, a shell (nearly complete shell lacking parts of P10 and some costals), and it is a 3D body fossil. Its type locality is Chriacus Locality, which is in a Wasatchian terrestrial horizon in the Willwood Formation of Wyoming. It is the type species of Baltemys.

Synonyms

Baltemys velogastros was named by Lichtig and Lucas (2015). Its type specimen is UCM 32796, a partial skeleton (carapace and plastron), and it is a 3D body fossil. Its type locality is Huerfano III, which is in a Bridgerian terrestrial horizon in the Huerfano Formation of Colorado.

It was synonymized subjectively with Baltemys staurogastros by Joyce and Bourque (2016).

Synonymy list

Year	Name and author
1991	Baltemys staurogastros Hutchison p. 148
2015	Baltemys velogastros Lichtig and Lucas p. 158 figs. 5-6
2016	Baltemys staurogastros Joyce and Bourque

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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
—	Sauropsida
class	Reptilia
—	Testudinata	(Oppel 1811)
order	Testudines	Batsch 1788
suborder	Cryptodira
superfamily	Trionychoidea	Fitzinger 1826
family	Kinosternoidea	()
family	Kinosternidae	()
genus	Baltemys
species	staurogastros

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.

†Baltemys staurogastros Hutchison 1991

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Invalid names: Baltemys velogastros Lichtig and Lucas 2015 [synonym]

Diagnosis

Reference	Diagnosis
A. J. Lichtig and S. G. Lucas 2015 (Baltemys velogastros)	"Differs from Baltemys staurogastros in that the suture of the hypo- and xiphiplastra is arrow shaped, pointing anteriorly. In addition the V5-pleural sulcus contacts marginal 11 which is not seen in B. staurogastros. Further, the plastron is narrower, with a wider bridge than that of B. staurogastros."

Measurements

No measurements are available

Composition:

phosphaticsubp

Entire body:

yesg

Adult length:

100 to < 1000g

Environment:

freshwaterg

Locomotion:

actively mobilec

Life habit:

aquaticg

Diet:

carnivoreg

Reproduction:

oviparoussuperf

Created:

2006-04-19 15:15:01

Modified:

2006-04-19 17:15:01

Source: g = genus, superf = superfamily, c = class, subp = subphylum

References: Uetz 2005, Hendy et al. 2009, Carroll 1988, Holroyd et al. 2001

Age range: base of the Wasatchian to the top of the Bridgerian or 55.80000 to 46.20000 Ma

Collections (21 total)

Time interval	Ma	Country or state	Original ID and collection number
Wasatchian	55.8 - 50.3	USA (Wyoming)	Baltemys sp. (15559) Baltemys staurogastros (15509 15538 type locality: 15552 15553 15576 15897 168284 168285 168286 168287 168288 168289 168290 168291 168292 168293 168294 168295 168296)
Bridgerian	50.3 - 46.2	USA (Colorado)	Baltemys velogastros (16241)