The Palaeontological Association Field Guide to Fossils, Fossils of the Rhaetian Penarth Group

The Rhaetian Penarth Group includes the former Westbury Beds, Cotham Beds, and White Lias. It crops out in a narrow strip from the Devon and Dorset coast to the mouth of the Tees, and is particularly well known from the exposures along the Bristol Channel. This diverse suite of late Triassic sedimentary rocks is internationally famous for the fossils that it yields, most notably from the bone beds. Coverage is comprehensive, with separate chapters on foraminifera, gastropods, bivalves, crustaceans, insects, echinoderms, other invertebrates, conodonts, fish, tetrapods, trace fossils and plants. There are background chapters on sedimentology, stratigraphy and the formation of the bone beds. The guide is copiously illustrated with specimens from all major UK public collections of Penarth Group fossils illustrated on 26 plates and 30 text-figures. It will be of use both to collectors who want to know more about this diverse and interesting suite of fossils, as well as to students of of geology who wish to understand their conditions of deposition and accumulation.

1. INTRODUCTION-THE PENARTH GROUP 9 Andrew Swift and David M. Martin 2. STRATIGRAPHY (INCLUDING BIOSTRATIGRAPHY) 15 Andrew Swift 2. BRIEF HISTORY OF PALAEONTOLOGICAL STUDIES 31 Andrew Swift 4. ASPECTS OF THE SEDIMENTOLOGY OF THE WESTBURY FORMATION 39 Joe H.S. Macquaker 5. BONE BEDS OF, THE WESTBURY FORMATION 49 David M. Martin 6. FORAMINIFERA 65 David M. Martin and Andrew Swift 7. GASTROPODS 75 Michael J. Barker and Martin C. Munt 8. BIVALVES 83 Hugh C. Ivimey-Cook, Peter Hodges, Andrew Swift and Jonathan D. Radley 9. ARTHROPODS 1: CRUSTACEANS 129 Ian D. Boomer, Christopher J. Duffin and Andrew Swift 10. ARTHROPODS 2: INSECTS 149 M.A. Jarzembowski 11. ECHINODERMS 161 Andrew Swift 12. OTHER INVERTEBRATES 169 Andrew Swift 13. CONODONTS 183 Andrew Swift 14. FISH 191 Christopher J. Duffin 15. TETRAPODS 223 Glenn W. Storrs 16. TRACE FOSSILS 239 Andrew Swift and Christopher J. Duffin 17. PLANTS 251 Andrew Swift References 257 Systematic Index 299