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symphyseal tiger


FossilFreak

This is one of my favorite teeth. It was found in the reject pile while at the museum. Not in one of the buckets I was sifting. I believe its a symphyseal tiger, but I've heard someone say that it was a symphyseal dusky or bull (can't remember).

From the album:

Lee Creek / Aurora Reject - Micro Fossils

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Tiger symphyseals can take different shapes.  The ones I've seen are modern and a little more asymmetrical but those two would be in the range especially accounting for the age difference (from now back to likely Yorktown Formation time or about 4 million years).  I think this could be one of them. 

 

I doubt it's a bull or dusky symphyseal because the root would be narrower and the root lobes would be very close together or it would just be one vertical root a little wider than the crown.  The crown would also be narrower and more finely-serrated to the point you would need magnification to see them (might not be serrated at all.  A tiger symphyseal does have more spread out root lobes like that.

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