Plateosaurus trossingensis Fraas, 1913

Fernández, Omar Rafael Regalado, Stöhr, Henrik, Kästle, Benedikt & Werneburg, Ingmar, 2023, Diversity and taxonomy of the Late Triassic sauropodomorphs (Saurischia, Sauropodomorpha) stored in the Palaeontological Collection of Tübingen, Germany, historically referred to Plateosaurus, European Journal of Taxonomy 913 (1), pp. 1-88 : 62-64

publication ID

https://doi.org/ 10.5852/ejt.2023.913.2375

publication LSID

lsid:zoobank.org:pub:F9BD2A46-57EC-4B9D-A52E-E6A45EC67B56

DOI

https://doi.org/10.5281/zenodo.10424377

persistent identifier

https://treatment.plazi.org/id/03C14140-FF85-4331-9E3C-3698FA9FFC0E

treatment provided by

Plazi

scientific name

Plateosaurus trossingensis Fraas, 1913
status

 

Plateosaurus trossingensis Fraas, 1913

Figs 6 View Fig , 7 View Fig , 24, 30

Plateosaurus quenstedti von Huene, 1905: 348 .

Type material

Holotype

GERMANY • almost complete skeleton; Obere Mühle , Trossingen Formation; SMNS 13200 About SMNS .

Material examined

We treat the following specimens as comparable to Plateosaurus trossingensis but with distinctive morphotypes:

“ GPIT I” ( Fig. 24 View Fig )

GERMANY – Obere Mühle, Trossingen Formation • mounted skeleton in the collection, comprises most of the skeleton, and several cast elements, including a cast of the skull of SMNS 13200 ; GPITPV-30784 original skull of the skeleton embedded partially in matrix; GPIT-PV- 111840 left maxillary; GPIT-PV- 111842 left squamosal; GPIT-PV- 111848 left postorbital; GPIT-PV- 111849 left jugal; GPIT-PV- 111845 left quadratojugal; GPIT-PV- 111846 left quadrate; GPIT-PV- 111847 right quadrate; GPIT-PV- 111852 right squamosal; GPIT-PV- 111853 right postorbital; GPIT-PV- 111854 right jugal; GPIT-PV- 111850 right quadratojugal; GPIT-PV- 111851 hyoid and tongue bones still in the matrix; GPIT-PV- 60260 capitulum and tuberculum of a thoracic rib; GPIT-PV- 60257 fragment of the neural arch of a caudal vertebra; GPIT-PV- 60256 right distal carpal; GPIT-PV- 60338 right manual phalanx; GPIT-PV- 60274 right manual phalanx; GPIT-PV- 60275 right manual phalanx; GPIT-PV- 60276 right manual phalanx; GPIT-PV- 60277 right manual phalanx; GPIT-PV- 60278 right manual claw; GPITPV-60339 left distal phalanx of manual digit V; GPIT-PV- 60337 left manual phalanx; GPIT-PV- 60253 right distal tarsal; GPIT-PV- 60254 six distal caudal vertebrae with three chevrons; GPIT-PV- 60223 .

Note: Plateosaurus trossingensis , gracile and medium-sized morphotype. This specimen was referred to as Pl. ‘ quenstedti ’ ( von Huene 1932).

“ GPIT VI ” ( Fig. 30 View Fig )

GERMANY – Obere Mühle, Trossingen Formation • a right femur, a right tibia, a right fibula, a right astragalus, a complete set of the right metatarsals and pedal phalanges, still embedded in the matrix; GPIT-PV- 30789 .

Note: Plateosaurus cf. trossingensis , gracile and medium-sized morphotype. Von Huene also referred to this specimen as Pl. ‘ quenstedti ’.

“ GPIT A” ( Figs 6–7 View Fig View Fig )

GERMANY – Pfrondorf, (?) Trossingen Formation • atlas; GPIT-PV- 60168 axis; GPIT-PV- 60162 anterior cervical 5; GPIT-PV- 60164 posterior cervical 8; GPIT-PV- 60155 posterior cervical 9; GPITPV-60156 anterior dorsal 4(?); GPIT-PV- 60154 fragment of the neural arch of posterior dorsal 14(?); GPIT-PV- 60159 left scapula; GPIT-PV- 60152 right ulna; GPIT-PV- 60172 left ulna; GPIT-PV- 60163 right pubis; GPIT-PV- 60153 left femur with a reconstructed shaft; GPIT-PV- 60151 proximal portion of right femur; GPIT-PV- 60150 left fibula; GPIT-PV- 60170 proximal and distal ends of metatarsal II; GPIT-PV- 60165 proximal and distal ends of metatarsal III; GPIT-PV- 60171 pedal ungual III with the distal end of phalanx III.3; GPIT-PV- 60161 possibly pedal phalanx IV.2; GPIT-PV- 60157 possibly pedal phalanx IV.3; GPIT-PV- 60158 casts of axis; NHMUK PV R 3062 cervical vertebra 5; NHMUK PV R 3063 cervical vertebra 7; NHMUK PV R 3064 cervical vertebra 8; NHMUK PV R 3065 left pubis; NHMUK PV R3067 right pubis NHMUK PV R 5845 both ischia; NHMUK PV R 3066 left ulna; NHMUK PV R 3071 left radius; NHMUK PV R 3074 left femur; NHMUK PV R 3068 proximal part of the left tibia; NHMUK PV R 5849 left fibula; NHMUK PV R 3070 two phalanges; NHMUK PV R 3075 left metatarsal; NHMUK PV R 3073 left metatarsal; NHMUK PV R 3073 claw; NHMUK PV R 3076 .

Note: Plateosaurus cf. trossingensis , a gracile and medium-sized morphotype, holotype of Pl. ‘ quenstedti ’. The GPIT Collection still houses some of the holotype material. However, four cervical vertebrae, a left scapula, two humeri, a radius, the posterior half of the dorsal series, the sacrum, the ilia, the ischia, the right pubis, the left tibia, and the metatarsals are currently lost – the NHMUK in London houses casts of some of these elements.

Remarks

“GPIT I” is referred to as Pl. trossingensis (species 8 in Fig. 3 View Fig ); it is worth noting that a considerable amount of intraspecific variability between the specimens that make Pl. trossingensis needs to be studied in detail. The rest of the material from the Obere Mühle is considered as Pl. cf. trossingensis based on the stratigraphic framework that has been currently proposed for the Trossingen outcrop. Von Huene (1929, 1932) formulated the taxonomy of sauropodomorphs from the Late Triassic more akin to the polytypic approach, where morphotypes are used as criteria to produce what in modern usage would be equivalent to a subspecies. The specimen “GPIT A” from Pfrondorf (label c in Fig. 1 View Fig ), the holotype of Plateosaurus ‘ quenstedti ’ (species 3 in Fig. 3 View Fig ), shares several similarities in the ulna, the ilium and the femoral head morphology with GPIT-PV-30784. The holotype of Pl. ‘ quenstedti ’, however, is now incomplete, with several elements lost, although casts of most of these elements are now available in the Natural History Museum. Given these circumstances, it is reasonable to consider Pl. ‘ quenstedti ’ as a senior subjective synonym of Pl. trossingensis . Furthermore, if future studies conclude that the disparity between the holotype of Pl. trossingensis and GPIT-PV-30784 is substantial enough to warrant the recognition of a new species, then GPIT-PV-30784 can bear the name Pl. ‘ quenstedti ’ of which GPIT-A would be the holotype.

SMNS

Germany, Stuttgart, Staatliches Museum fuer Naturkunde

GPIT

Institut und Museum fur Geologie und Palaeontologie, Universitat Tuebingen

VI

Mykotektet, National Veterinary Institute

NHMUK

Natural History Museum, London

Kingdom

Animalia

Phylum

Chordata

Class

Reptilia

Order

Saurischia

Family

Plateosauridae

Genus

Plateosaurus

Loc

Plateosaurus trossingensis Fraas, 1913

Fernández, Omar Rafael Regalado, Stöhr, Henrik, Kästle, Benedikt & Werneburg, Ingmar 2023
2023
Loc

Plateosaurus quenstedti

von Huene F. F. 1905: 348
1905
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