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Patagoniaemys gasparinae

Osteichthyes

Taxonomy
Patagoniaemys gasparinae was named by Sterli and de la Fuente (2011). Its type specimen is MPEF-PV 3283, a partial skeleton, and it is a 3D body fossil. Its type locality is Buitre Chico Hill, which is in a Maastrichtian estuary/bay siltstone in the La Colonia Formation of Argentina.

Synonymy list
YearName and author
2011Patagoniaemys gasparinae Sterli and de la Fuente p. 66 figs. 3-10
2013Patagoniaemys gasparinae Pérez-García and Murelaga
2014Patagoniaemys gasparinae de la Fuente et al.
2015Patagoniaemys gasparinae Gasparini et al.
2015Patagoniaemys gasparinae Sterli

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
RankNameAuthor
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
—Perichelydia
—Meiolaniformes
genusPatagoniaemys
speciesgasparinae

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.

†Patagoniaemys gasparinae Sterli and de la Fuente 2011
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Diagnosis
ReferenceDiagnosis
J. Sterli and M. S. de la Fuente 2011Turtle with the following unique combination of characters (autapomorphies marked with an asterisk): skull and shell ornamented with pits and irregular grooves; large nuchal bone; small costal 1*; large costal 2, strongly bent anteriorly*; thoracic rib 1, well developed, almost reaching axillary buttress; thoracic rib 2 fused with costal 1 and going underneath costal 2*; broad vertebral scales; pleural scale 1 reaching peripherals; marginal scale 5, curved anteriorly; sulcus between vertebral 3 and 4 located on costal 5 and probably 6; costo-peripheral fontanelles present; carapace–plastron connected by ligaments; formed cervical vertebrae with diapophyses and parapophyses; diapophyses located in the anterior half of the cervical centra and ventrally keeled; presumed cervical formula (2(,(3(,(4),)5?,?6),)7(,(8); first thoracic vertebrae facing mainly anteriorly; articular surface of sacral vertebra 1 faces strongly ventrally; first caudal rib also in contact with sacral vertebra 2; caudal vertebrae with articulation facets for chevron bones; biconvex caudal vertebra between the anterior opisthocoelous centra and the procoelous posterior centra.
J. Sterli 2015Patagoniaemys gasparinae is differentiated from other meiolaniforms by the unique combination of the following characters (autapomorphies marked with an asterisk): presence of a large nuchal bone, absence of guttered bridge peripherals, absence of a preneural, costal I small*, costal II large and strongly bent anteriorly*, absence of contact between neural I and costal II, thoracic rib I well developed and almost reaching axillary buttress, thoracic rib II fused with costal I and underlapping costal II*, pleural scute I reaching peripherals, marginal scute V curved anteriorly, sulcus between vertebral scutes III and IV located on costal V and probably VI, presence of costo-peripheral fontanelles, carapace–plastron connected by ligaments, cervical vertebrae formed with parapophyses and diapophyses, the latter located in the anterior half of the cervical centra, cervical centra ventrally keeled, presumed cervical formula (2(,(3(,(4),)5?,?6),)7(,(8), first thoracic vertebrae facing mainly anteriorly, articular surface of sacral vertebra 1 faces strongly ventrally, first caudal rib also in contact with sacral vertebra II, caudal vertebrae with articulation facets for chevron bones, biconvex caudal vertebra between the anterior opisthocoelous centra and the procoelous posterior centra
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrials
Locomotion: actively mobilec
Comments: From Sterli (2015): The paleoecology of nonmeiolaniid meiolaniforms has not been explored in detail, in part because all known specimens lack postcranial remains that could be used to infer the habits of those meiolaniforms. However, recent fieldwork in the La Colonia Formation in Chubut Province, Argentina, resulted in the discovery of several new remains of Patagoniaemys gasparinae, including many osteoderms, suggesting terrestrial habits for Pa. gasparinae.s
Created: 2017-04-29 07:49:38
Modified: 2017-04-29 07:49:38
Source: s = species, c = class, subp = subphylum
References: Kiessling 2004, Carroll 1988, Hendy et al. 2009, Sterli 2015

Age range: Maastrichtian or 72.20000 to 66.00000 Ma

Collections (16 total)


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.2 - 66.0Argentina (Chubut) Meiolaniidae indet. (99438) Patagoniaemys gasparinae (type locality: 133651 166582 166583 206174 206175 206176 206177 206178 206179 206180 208387 208388 208390 208418 224258)