Pachysaurus ajax 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 : 67

Pachysaurus ajax von Huene, 1905

Figs 11–12

Type material

Holotype (examined)

GERMANY – Wüstenroth , Trossingen Formation (?) • both forelimbs, comprising humeri, radii, ulnae, both scapulae, both coracoids, and part of the cervical and dorsal series; GPIT-PV-30790 • partial manus; GPIT-PV-60185 , GPIT-PV-60196 , GPIT-PV-60198 to GPIT-PV-60201 , GPIT-PV-60203 , GPITPV-111862 • several remains that belonged to elements in GPIT-PV-30790 . (see Fig. 11 and Appendix 1 for more details)

Figures

Fig. 11.Holotype of ‘Pachysaurus ajax’described by von Huene (1907) on a reconstruction, redrawn from von Huene (1907: pl. 103). A. GPIT-PV-30790, both forelimbs, with complete humeri, ulnae and radii, both scapulae, both coracoids, and part of the cervical and dorsal series. B. GPIT-PV-60197, centrum of a presumed dorsal vertebra 2. C. GPIT-PV-60185, right metacarpal II. D. GPIT-PV-60196, fragment of presumed left metacarpal II. E. GPIT-PV-60201, fragment of a presumed right manual phalanx III.1 in dorsal view. F. GPIT-PV-60200, a presumed right carpal. G. GPIT-PV-60199, fragment of a presumed left manual phalanx in distal view. H. GPIT-PV-60198, fragment of a presumed left metacarpal. I– AG. Elements that cannot be anatomically identified. I. GPIT-PV-60266. J. GPIT-PV-60267. K. GPIT- PV-60268. L. GPIT-PV-111863. M. GPIT-PV-111864. N. GPIT-PV-111865. O. GPIT-PV-111866. P. GPIT-PV-111867. Q. GPIT-PV-111868. R. GPIT-PV-111868. S. GPIT-PV-111869. T. GPIT-PV-111870. U. GPIT-PV-111871. V. GPIT-PV-111872. W. GPIT-PV-111873. X. GPIT-PV-111874. Y. GPIT- PV-111875. Z. GPIT-PV-111876. AA. GPIT-PV-111877. AB. GPIT-PV-111878. AC. GPIT-PV-1881. AD. GPIT-PV-111880. AE. GPIT-PV-60203. AF. GPIT-PV-111882. AG. GPIT-PV-111879. 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.

Fig. 12. Archive photograph (UAT 678/73) of the mounted specimen. The skeleton mount was given the collection number GPIT-PV-30790 (ca 1901). Some elements from this mount have recently been rediscovered as items stored in individual boxes, along with an old sheet of paper (undated) indicating where each element belonged. However, we are not certain that the elements in these boxes have not been misplaced given these elements were uncatalogued until March 2022.