References
Reference
Forrest, Richard and Oliver, Nicholas (2003) Ichthyosaurs and plesiosaurs from the Lower Spilsby Sandstone Member (Upper Jurassic), north Lincolnshire; Proceedings of the Yorkshire Geological Society, 54(4), pp.269-275
Ichthyosaurs and plesiosaurs from the Lower Spilsby Sandstone Member (Upper Jurassic), north Lincolnshire
Principal Author
Richard Forrest
Other Authors
Nicholas Oliver
Header
Academic paper
Journal
Proceedings of the Yorkshire Geological Society
Volume
54
Issue
4
Pages
269-275
Abstract
The Lower Spilsby Sandstone Member (Upper Jurassic, Portlandian) of the Spilsby Sandstone Formation, north Lincolnshire, has yielded an assemblage of small marine reptiles, including an ichthyosaur and several plesiosaur taxa. All the specimens are from a small area of a quarry near Nettleton, possibly from beds deposited in a small lagoon cut off from the open sea. The fauna is characterized by the small size of the individual animals, and by morphological characteristics that are closer to those of Lower Cretaceous Wealden taxa than to the better-known Upper Jurassic fauna that is typically found in deeper water environments.
Language
English