Teratosaurus suevicus Meyer, 1861

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

Teratosaurus suevicus Meyer, 1861

Zanclodon suevicus – Fraas 1896: 18.

Type material

Holotype

GERMANY • right maxilla; Mittlerer Stubensandstein , Mittelkeuper (middle Norian, Late Triassic); NHMUK PV OR 38646 .

Remarks

Fraas (1896) referred to this maxilla as Zanclodon suevicus (species 28 in Fig. 3 ). The morphology of the maxilla has been identified as an early-branching rauisuchian, a group of carnivore archosaurs from the Triassic ( Brusatte et al. 2009). The genus Teratosaurus is therefore excluded from Sauropodomorpha . The species of Teratosaurus have been traditionally considered as part of Plateosaurus gracilis (species 20 in Fig. 3 ).

Figures

Fig. 3. Timeline showing changes in the taxonomic placement of the specimens of early-diverging sauropodomorphs considered to be Plateosaurus Meyer, 1837 from 1900 to 2004. This timeline considers only papers discussing taxonomy and papers describing and naming new species. Lines indicate continuity or change in specimen composition of species across revisions. Arrows outside the timeline indicate that the taxa were named before 1900 and/or are still valid after 2004. When more lines depart from one node, part of the specimens included in that species were referred to as different species. Lines converging in one node indicate that the specimens were lumped together into the species in the node. Stars at the end of a line indicate that in the taxonomic revision, the name became either a nomen dubium or a nomen nudum. Lines continuing after this point indicate that the specimens were referred to the new node. This timeline does not include specimens removed from the genus Plateosaurus, namely Efraasia (von Huene, 1907–1908), Ruehleia Galton, 2001, Camelotia Galton, 1985 and Tuebingosaurus Regalado Fernández & Werneburg, 2022. The green lines correspond to species that have been synonymized withPl. trossingensisFraas, 1913, and the blue lines correspond to those that have been synonymized with Pl. gracilis(von Huene, 1905). The orange-red lines refer to species removed from Sauropodomorpha Huene, 1932 altogether. Changes after 2004 are discussed in the text.