I purchased a coyote skull (missing lower jaw) from a fossil dealer in Tucson a few years back. It was advertised as coming from an older collection, collected somewhere in the San Joaquin Valley (possibly McKittrick?).
When I purchased it, I didn't think twice about authenticity. The dealer is reputable and has been around for a long time. However, as time has gone on, I've considered the idea that anyone could take a modern coyote skull, dip it in tar, and do some things to make it look aged.
I don't think that's the case, but not being an expert in tar pit stuff, I'm wondering if anyone on the list has knowledge in this area. Is there anyway to verify authenticity on a piece like this? Anything to look for?
If anyone is interested, I'd be happy to post more pics. Would love to hear from anyone out there who has knowledge of tar pit fossils.
Here's a pic on FB: http://www.facebook.com/photo.php?fbid=55154789416&set=a.55152679416.50144.540139416&type=3&theater