This article's factual accuracy is disputed. (October 2020)
Picrodon is the name given to a genus of archosaur, possibly a sauropodomorph dinosaur, from the Rhaetian of England which was possibly synonymous with the dubious archosaur Avalonianus. The type, and only species, P. herveyi, was named in 1898.
Temporal range: Late Triassic,
Discovery and namingEdit
In 1894, W. A. Sanford described the fossil remains of what he considered to be two large reptiles discovered near Westbury-on-Severn, Glastonbury (Westbury Formation) by Eev. Sydenham H. A. Hervey and Sanford himself. Harry Govier Seeley described the fossils and named two genera: Avalonia (preoccupied; now Avalonianus) and Picrodon; both are based solely on teeth.
Only a single tooth, holotype BMNH R2875, belonging to P. herveyi is known, making the remains not sufficient enough to make judgments on its diet or its classification; although it is agreed that Picrodon was an archosaur to some degree.
Sanford (1894) classified Picrodon as a reptile, while Seeley (1898) classified Picrodon as a saurian. More modern research however almost certainly places Picrodon within Archosauria; Peter Malcolm Galton (1985) suggested that Picrodon may have been a basal sauropodomorph. Currently, its exact phylogenetic placement within Archosauria remains unknown.
- Galton, Peter M. (1985). "Notes on the Melanorosauridae, a family of large Prosauropod Dinosaurs (Saurischia: Sauropodomorpha)". Geobios. 18 (5): 671–676. doi:10.1016/s0016-6995(85)80065-6. ISSN 0016-6995.
- H. G. Seeley. 1898. On large terrestrial saurians from the Rhaetic Beds of Wedmore Hill, described as Avalonia sanfordi and Picrodon herveyi. Geological Magazine, decade 4 5:1-6
- Proceedings of the Somerset Archaeological Society - vol. xl, 1894, p. 234