I have no idea!

by Sara
(Southeast Missouri)

Nautiloid?

It's hard to really capture what it looks like in a picture, but if you look closely there are crystals inside of the fossil. The white parts are raised. I have been searching this area for about 15 years and I've never found anything like this before. Any ideas? :-) I don't have a very high-quality camera but the tail of whatever creature this was is very detailed.

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Thank you
by: Sara

Thank you for the web address. I will check it out! The fossil appears to be shallow, it does not show through to the other side of the rock. I looked up Nautiloid on images and your right. It does seem to look the most similar from what I've seen.

Nautiloid?
by: Douglas

It may be a type of nautiloid. I can't say for sure because this is only a part of the whole. Is the matrix thick or thin? Does the fossil show through the bottom side?

Much of Southeastern Missouri is Ordovician rocks and the fossils from that time are all marine life. Nautiloids were in the area at the time. Check out this map to verify where you found the fossil:

http://members.socket.net/~joschaper/geo.html

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