PBDB Taxon

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

Efraasia minor

Reptilia

Taxonomy

Teratosaurus minor was named by Huene (1908). Its type specimen is SMNS 11838, a set of postcrania, and it is a 3D body fossil. Its type locality is Burrer Quarry, Pfaffenhofen, which is in an Alaunian terrestrial sandstone/marl in the Löwenstein Formation of Germany.

It was synonymized subjectively with Sellosaurus gracilis by Galton (1985), Galton (1985); it was considered a nomen dubium by Galton (2001), Galton and Upchurch (2004); it was recombined as Efraasia minor by Yates (2003), Upchurch et al. (2007), Galton (2007), Barrett et al. (2007), Galton et al. (2007), Irmis and Knoll (2008), Bittencourt and Kellner (2009), Yates (2010), Langer et al. (2010), Apaldetti et al. (2011), Becerra et al. (2016), Nau et al. (2020).

Synonyms

Sellosaurus fraasi was named by Huene (1908). It is a 3D body fossil. Its type locality is Burrer Quarry, Pfaffenhofen, which is in an Alaunian terrestrial sandstone/marl in the Löwenstein Formation of Germany.

It was synonymized subjectively with Plateosaurus gracilis by Schmidt (1938), Kuhn (1939), Steel (1970), Kuhn (1971); it was synonymized subjectively with Sellosaurus gracilis by Galton (1985); it was synonymized subjectively with Efraasia minor by Yates (2003); it was considered a nomen dubium by Galton (2001), Galton and Upchurch (2004).
Thecodontosaurus diagnosticus was named by Fraas (1912). Its type specimen is SMNS 12667, a partial skeleton, and it is a 3D body fossil. Its type locality is Burrer Quarry, Pfaffenhofen, which is in an Alaunian terrestrial sandstone/marl in the Löwenstein Formation of Germany.

It was recombined as Palaeosaurus diagnosticus by Huene (1932), Schmidt (1938), Berckhemer (1938), Kuhn (1939), Huene (1941), Young (1941); it was recombined as Palaeosauriscus diagnosticus by Steel (1970), Kuhn (1971); it was recombined as Efraasia diagnostica by Galton (1973), Galton and Cluver (1976), Langer and Benton (2006); it was synonymized subjectively with Sellosaurus gracilis by Galton (1984), Galton (1985), Galton (2001), Galton (2001), Galton and Upchurch (2004); it was synonymized subjectively with Efraasia minor by Yates (2003), Upchurch et al. (2007), Galton (2007).

Synonymy list

Year	Name and author
1908	Teratosaurus minor Huene p. 174 figs. 188-191
1908	Sellosaurus fraasi Huene p. 183 figs. 74-75
1909	Sellosaurus fraasii Fraas p. xxxiv
1912	Thecodontosaurus diagnosticus Fraas p. lxvi
1912	Thecodontosaurus diagnosticus Obermeyer p. 135
1913	Teratosaurus minor Fraas p. 1097
1913	Thecodontosaurus diagnosticus Fraas p. 1099
1913	Sellosaurus fraasii Fraas p. 1100
1914	Teratosaurus minor Fraas p. 126
1914	Thecodontosaurus diagnosticus Fraas p. 130
1914	Sellosaurus fraasii Fraas p. 131
1914	Sellosaurus fraasii Hennig p. 418
1914	Teratosaurus minor Hennig p. 418
1914	Thecodontosaurus diagnosticus Hennig p. 418
1914	Thecodontosaurus diagnosticus Huene p. 12
1914	Sellosaurus fraasi Huene p. 14
1914	Teratosaurus minor Huene p. 14
1915	Sellosaurus fraasi Huene p. 3
1932	Palaeosaurus diagnosticus Huene p. 73 fig. 7
1938	Palaeosaurus diagnosticus Berckhemer p. 196
1938	Teratosaurus minor Berckhemer p. 196
1938	Palaeosaurus diagnosticus Schmidt p. 71
1938	Teratosaurus minor Schmidt p. 71
1939	Palaeosaurus diagnosticus Kuhn p. 57
1939	Teratosaurus minor Kuhn p. 59
1941	Palaeosaurus diagnosticus Huene p. 141
1941	Palaeosaurus diagnosticus Young p. 206
1967	Thecodontosaurus diagnosticus Charig p. 712
1970	Palaeosauriscus diagnosticus Steel p. 26
1970	Teratosaurus minor Steel p. 26
1971	Palaeosauriscus diagnosticus Kuhn p. 16
1971	Teratosaurus minor Kuhn p. 16
1973	Efraasia diagnostica Galton p. 247
1976	Efraasia diagnostica Galton and Cluver p. 137
2003	Efraasia minor Yates p. 328
2006	Efraasia diagnostica Langer and Benton p. 318 fig. 4
2007	Efraasia minor Barrett et al. p. 321
2007	Efraasia minor Galton p. 517
2007	Efraasia minor Galton et al. p. 120
2007	Efraasia minor Upchurch et al. p. 76
2008	Efraasia minor Irmis and Knoll p. 122
2009	Efraasia minor Bittencourt and Kellner p. 32
2010	Efraasia minor Langer et al. p. 70
2010	Efraasia minor Yates p. 746
2011	Efraasia minor Apaldetti et al. p. 4
2016	Efraasia minor Becerra et al. p. 560
2020	Efraasia minor Nau et al. p. 704

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
—	Sauropsida
class	Reptilia

Rank	Name	Author
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Saurischia	()
—	Eusaurischia
—	Sauropodomorpha	(Huene 1932)
genus	Efraasia
species	minor	(Huene 1908)

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.

†Efraasia minor Huene 1908

show all | hide all

Invalid names: Palaeosaurus diagnosticus Fraas 1912 [synonym], Sellosaurus fraasi Huene 1908 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Created:

2017-04-17 15:16:03

Modified:

2017-04-17 15:16:03

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

References: Carroll 1988, Hendy et al. 2009

Age range: Alaunian or 215.38000 to 211.18000 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Norian	227.3 - 205.7	Germany (Baden-Württemberg)	Plateosaurus gracilis (13285)
Alaunian	215.38 - 211.18	Germany (Baden-Württemberg)	Teratosaurus minor, Sellosaurus fraasi, Thecodontosaurus diagnosticus, Efraasia minor (type locality: 47800)