Friday, 23 March 2007

Friday's Mystery Fossil

HINT: The feature running across the top of the picture will tell you what kind of (vertebrate) animal it is and the feature in the bottom right hand corner will narrow down the group.

Tough one! Any guesses?

10 comments:

Sarda Sahney said...

Apologies to a reader whose comment was accidentally deleted. Greg Laden suggested th feature at the top of the picture was tire track:)

Malacoda said...

Looks metazoan to me, is it a deuterostome bilaterian?

Sarda Sahney said...

Yes. It is a fish

TheBrummell said...

I know pretty much nothing about identifying fossils, so I'll just make a wild guess.

That's a spine at the bottom-right, so this is... an ancient shark, similar to modern spiny dogfish (Squalus acanthius).

My take on S. acanthius at http://brummellblog.blogspot.com/search?q=dogfish

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