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1873 Views 2 Replies Last post: Dec 30, 2013 10:43 AM by Paleoworld-101 RSS
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Dec 30, 2013 3:19 AM

Mammal Ankle Bone?

Howdy again,


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.


Any help would be appreciated.




  • Currently Being Moderated
    Dec 30, 2013 10:27 AM (in response to Paleoworld-101)
    Re: Mammal Ankle Bone?

    Crocodile and turtle have different bone structure to mammals and I think you can rule these out. I agree it is probably an ankle bone, a talus or astragalus, I don't immediately recognise it.

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