This fossil was found in late November on Bouldnor beach, Isle of Wight. It is about 30 million years old (Hamstead formation). Candidates include turtle, crocodile or mammal.
It is about 40mm by 30mm and around 25mm tall. It looks to be a complete bone, not just a fragment. I'm guessing it is some sort of ankle bone but which bone exactly i don't really know. It's large size seems to rule out turtle and crocodile i would think. So assuming it is mammalian, any ideas what mammal it might have come from?
The most common in the area it was found are the pig sized anthracotheres Bothriodon and Elomeryx but i havent seen any fossils from either genus to compare to so cannot really know if it is indeed from one of these animals. Other mammals from the Hamstead formation include but are not restricted to- Entelodon, Hyaenodon, Cynodictis, Amphicynodon, Palaeotherium and various others.