Plateosaurus gracilis (F. Huene, 1908)

Sues, Hans-Dieter & Schoch, Rainer R., 2025, Synopsis of the Triassic reptiles from Germany, Fossil Record 28 (2), pp. 411-483 : 411-483

publication ID	https://doi.org/10.3897/fr.28.164405
publication LSID	lsid:zoobank.org:pub:E2366C87-D1C3-4F5A-A21D-1A7A5D49BB8F
DOI	https://doi.org/10.5281/zenodo.17824175
persistent identifier	https://treatment.plazi.org/id/A0685C4E-9E96-532C-A8DE-5DFCC7609F3F
treatment provided by	by Pensoft
scientific name	Plateosaurus gracilis (F. Huene, 1908)
status

Treatment

Holotype.

SMNS 5717 About SMNS , two dorsal vertebrae, sacrum with right ilium, nearly complete tail back to caudal 44 (partly with attached hemal arches), left scapula, pelvis, left femur, proximal end of fibula, and phalanges.

Type locality.

Stuttgart-Heslach, Baden-Württemberg.

Type horizon.

Lower Stubensandstein (S 1), Löwenstein Formation (equivalent of Arnstadt Formation in the basin), Middle Keuper Subgroup. Age: Late Triassic (Norian: Lacian).

Referred material.

Regalado Fernández et al. (2023) provided a detailed inventory of specimens referred to this taxon currently housed at GPIT.

Diagnosis.

Distinguished by the combination of the following features: external narial fenestra rounded; length of base of proximal caudal neural spines greater than half of length of neural arch; proximal width of metacarpal I less than 65 % of length; and distal ends of metacarpals II and III subrectangular in distal view ( Schaeffer 2024).

Comments.

F. Huene (1908) placed this species in a separate genus Sellosaurus . F. Huene (1932) and Yates (2003) synonymized Sellosaurus with Plateosaurus . Yates diagnosed the species gracilis by a single autapomorphy, paired sharp-rimmed fossae immediately behind the basal tubera on the basioccipital. We follow Yates (2003) and Regalado Fernández et al. (2023) in synonymizing Sellosaurus with Plateosaurus .

References.

F. Huene (1905 b, 1907–1908, 1932 b), Galton (2001 a, b), Yates (2003), Schaeffer (2024).