Daily lives of fossil reptiles

Robert Coram (UK) The Mesozoic and Cenozoic deposits of Southern England have long been a rich source of fossil reptiles. Past finds of great historical importance include some of the earliest known examples of dinosaurs, ichthyosaurs and pterosaurs. Fossil material, including new species, continues to be revealed, mainly at rapidly eroding coastal sites. All these reptiles would have been active participants in their local ecosystems, whether on land or in the sea. Much information about the roles they played and their interactions with other organisms can be gleaned from their skeletal anatomy and from comparison with living relatives such as crocodiles. What this article is concerned with, however, is evidence of specific incidents in the lives, and deaths, of individual reptiles; tiny snapshots of opportunities, mishaps and the daily drudge of staying alive. These add more detail and colour to our knowledge of the lifestyles of these long-vanished animals. This evidence will be provided by four selected terrestrial and marine deposits from southern England, spanning the last quarter of a billion years of Earth history (Fig. 1). Fig. 1. Geological map showing locations of deposits discussed in the text. (1) Triassic Otter Sandstone of South Devon; (2) Jurassic Lower Lias of the Somerset (a) and Dorset (b) coasts; (3) Cretaceous Wealden beds of the Isle of Wight (IOW on map); and (4) Paleogene Hamstead beds of the Isle of Wight. Trace fossils in a desert world – the Triassic Otter Sandstone Rocks dating from the Triassic period, laid down between … Read More

To access this post, you must purchase Annual subscription, 12 Month Subscription or Monthly subscription.
%d bloggers like this: