Gresslyosaurus robustus von Huene, 1905

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 : 66

Gresslyosaurus robustus von Huene, 1905

Figs 9–10

Gresslyosaurus robustus von Huene, 1905: 348 .

Plateosaurus robustus – Steel 1970: 56.

Type material

Holotype GPIT-PV-60293 ( Figs 9–10 )

GERMANY – Bebenhausen, Trossingen Formation (?) • posterior half of a cervical vertebra; GPITPV-60195 • posterior half of a dorsal vertebra; GPIT-PV- 60188 • posterior dorsal vertebra; GPITPV-60183 • posterior dorsal vertebra; GPIT-PV- 60184 • second sacral vertebra; GPIT-PV- 60180 • articulated manual digit (3 non-terminal phalanges and one ungual); GPIT-PV- 60192 • distal part of the femur; GPIT-PV- 60292 • distal half of the fibula; GPIT-PV- 60179 • proximal and distal portions of a tibia; GPIT-PV- 60206 , GPIT-PV- 60207 • two pedal phalanges fused; GPIT-PV- 60194 • distal tarsal; GPIT-PV- 60191 • two non-terminal phalanges and one ungual attached; GPIT-PV- 60177 • pedal ungual phalanx; GPIT-PV- 60186 • two pedal phalanges fused; GPIT-PV- 60190 • pedal phalanx; GPIT-PV- 60312 • pedal ungual phalanx; GPIT-PV- 60187 • pedal ungual phalanx; GPIT-PV- 60309 • two pedal phalanges fused; GPIT-PV- 60189 .

Figures

Fig. 9. The mounted hindlimb of Gresslyosaurus Rütimeyer, 1856 (this mounted specimen has the catalogue number GPIT-PV-60293 for reference). The mount was disassembled in the second half of the 20th century. Photo from University Archive Tübingen, catalogue number of the photo: UAT 678/73; background changed by the authors.

Fig. 10 (see next page). A–S. Holotype of Gresslyosaurus robustus described by von Huene (1907) and illustrated on the reconstruction of Gresslyosaurus ‘plieningeri’ redrawn from von Huene (1907: pl. 104). A. GPIT-PV-60195, posterior half of a cervical vertebra in anterior view. B. GPIT-PV-60188, posterior half of a dorsal vertebra in anterior view. C. GPIT-PV-60183, posterior dorsal vertebra in lateral view. D. GPIT-PV-60184, posterior dorsal vertebra in lateral view. E. GPIT-PV-60180, second sacral vertebra in ventrolateral view. F. GPIT-PV-60192, articulated manual digit (three non-terminal phalanges and one ungual) in medial view. G. GPIT-PV-60292, distal part of the right femur in posterolateral view. H. GPIT- PV-60181, proximal half of the left fibula in lateral view. I. GPIT-PV-60206 and GPIT-PV-60207, proximal and distal portions of a tibia in medial view. J. GPIT-PV-60191, distal tarsal in distal view. K. GPIT- PV-60194, two pedal phalanges fused together in anteromedial view. L. GPIT-PV-60177, two non-terminal phalanges and one ungual in anterior view. M. GPIT-PV-60186, pedal ungual phalanx in lateral view. N. GPIT-PV-60190, two pedal phalanges fused together in dorsal view. O. GPIT-PV-60312, pedal phalanx in dorsal view. P. GPIT-PV-60187, pedal ungual phalanx in medial view. Q. GPIT-PV-60309, partial pedal ungual phalanx in medial view. R. GPIT-PV-60189, two pedal phalanges fused together in dorsal view. S. GPIT-PV-60208, astragalus in medial and dorsal views. T–AF. Fragments belonging to a smaller individual (von Huene 1907: 137). T. GPIT-PV-60193, large ungual phalanx with distal portion of the phalanx. Q. GPIT-PV-60258, indeterminate bone fragment. V. GPIT-PV-60301, partial centrum. W. GPIT-PV-60302, two fragmentary pieces of what has been identified as the proximal ends of metatarsal II and I in lateral views. X. GPIT-PV-60303, two fragmentary pieces of what has been identified as the distal ends of metatarsal II and IV in lateral views. Y. GPIT-PV-60304, shaft of a long bone, possibly a fibula. Z. GPIT-PV-60305, proximal portion of the metatarsal IV. AA. GPIT-PV-60306, three pieces of vertebra, although not from the same element: an articular surface, a neural arch and a fragment of a non-articular margin of the centrum. AB. GPIT-PV-60307, two pieces of vertebra, not from the same element. AC. GPIT-PV-60311, pedal phalanx. AD. GPIT-PV-60314, pedal phalanx. AE. GPIT-PV-60315, pedal ungual III.5. AF. GPIT-PV-60345, metatarsal III. AG. GPIT-PV-60218, right femoral head in anteromedial view, catalogued as part of the Trossingen material by Weishampel in 1983, but with the same preservation than Bebenhausen. The human skeleton represents a height of 1.75 m, as originally drawn by von Huene (1907: pl. 103), the relative size of the reconstructed sauropodomorph is 4.5 m. Reconstruction and photographs made by the authors, with photos taken on the labelled side or on the side that was illustrated in the past.