PBDB Taxon

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

Proganochelys quenstedtii

Reptilia

Taxonomy

Proganochelys quenstedtii was named by Baur (1887). Its type specimen is GPIT RE/09396, a partial shell (Internal mold (steinkern) of shell), and it is a mold. Its type locality is Schönbuch bei Häfner-Neuhausen, which is in a Norian fluvial-lacustrine sandstone in the Löwenstein Formation of Germany. It is the type species of Proganochelys.

It was corrected as Proganochelys quenstedti by Gaffney (1990), Danilov and Parham (2008), Pérez-García and Ortega (2011), Pérez-García and Murelaga (2013), Perea et al. (2014).

Synonyms

Psammochelys keuperina was named by Quenstedt (1889). Its type specimen is GPIT unnumbered, a set of postcrania (Internal mold (steinkern) of shell), and it is a mold.

It was synonymized objectively with Proganochelys quenstedti by Gaffney (1990); it was synonymized objectively with Proganochelys quenstedtii by Fraas (1899), Joyce (2017).
Stegochelys dux was named by Jaekel (1914). Its type specimen is MB.1910.45.2, a partial skeleton, and it is a 3D body fossil. Its type locality is Baerecke-Limpricht clay pit, Halberstadt (bed 18), which is in a Rhaetian floodplain claystone/sandstone in the Trossingen Formation of Germany.

It was recombined as Triassochelys dux by Jaekel (1918), Kuhn (1971); it was synonymized subjectively with Proganochelys quenstedti by Gaffney (1990); it was synonymized subjectively with Proganochelys quenstedtii by Joyce (2017).

Synonymy list

Year	Name and author
1887	Proganochelys quenstedtii Baur
1889	Psammochelys keuperina Quenstedt p. 120
1914	Stegochelys dux Jaekel
1918	Triassochelys dux Jaekel
1971	Triassochelys dux Kuhn p. 10
1990	Proganochelys quenstedti Gaffney
2008	Proganochelys quenstedti Danilov and Parham
2011	Proganochelys quenstedti Pérez-García and Ortega
2013	Proganochelys quenstedti Pérez-García and Murelaga
2014	Proganochelys quenstedti Perea et al.
2017	Proganochelys quenstedtii Joyce
2022	Proganochelys quenstedtii Scheyer et al.

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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	()

Rank	Name	Author
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
—	Testudinata	(Oppel 1811)
genus	Proganochelys
species	quenstedtii

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.

†Proganochelys quenstedtii Baur 1887

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Invalid names: Psammochelys keuperina Quenstedt 1889 [objective synonym], Stegochelys dux Jaekel 1914 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialuc

Locomotion:

actively mobilec

Created:

2017-04-17 15:15:35

Modified:

2017-04-17 15:15:35

Source: c = class, subp = subphylum, uc = unranked clade

References: Carroll 1988, Hendy et al. 2009

Age range: base of the Norian to the top of the Rhaetian or 227.30000 to 201.40000 Ma

Collections (5 total)

Time interval	Ma	Country or state	Original ID and collection number
Norian	227.3 - 205.7	Switzerland (Aargau)	Proganochelys quenstedtii (227790)
Norian	227.3 - 205.7	Germany (Baden-Wurttemberg)	Proganochelys quenstedtii (68038)
Norian	227.3 - 205.7	Germany (Baden-Württemberg)	Proganochelys quenstedti (22683) Proganochelys quenstedtii (type locality: 138871)
Rhaetian	205.7 - 201.4	Germany (Sachsen-Anhalt)	Stegochelys dux, Triassochelys dux (22684)