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Showing results for tags 'alum shale member'.
TqB posted a topic in Member CollectionsSaurorhynchus acutus (Agassiz, 1844) rostropremaxilla. Lower Jurassic, Mulgrave Shale Member (bed 42), Falciferum Subzone. Near Whitby, Yorkshire. I spotted this little fish rostrum when I was looking for belemnites a couple of weeks ago. It was about to flake off the outcrop and I hadn't found anything else interesting so I brought it home as a consolation prize. After some research, it seems it's very rare here. The only recorded specimens I can find are a few (5?) 19th century ones, including the holotype which is also just a jaw. Other workers at the time (Tate