Article: Rare tetrapod remains from the late Triassic fissure infillings of Cromhall Quarry, Avon
N. C. Fraser
Disassociated assemblages from the Mesozoic of South-west Britain display considerable variation both in the numbers of species present and in their distribution. Triassic fissure deposits at Cromhall Quarry, Avon have yielded abundant reptilian remains which for the most part are readily identified to generic level. These sediments have also revealed some very rare and quite unusual skeletal elements, including jaw bones and a procoelous vertebra. These could be prolacertiform, thalattosaurian, or pterosaurian remains, but the nature of the material makes taxonomic diagnoses difficult.