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Post by knave on Oct 21, 2021 10:15:11 GMT -5
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Post by RickB on Oct 21, 2021 11:00:01 GMT -5
Don't know, haven't seen one like that before
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Post by knave on Oct 21, 2021 11:10:47 GMT -5
They were in with a box of ammonites
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Post by rmf on Oct 21, 2021 13:05:53 GMT -5
What does the other side look like?
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rewdownunder
spending too much on rocks
Member since March 2012
Posts: 357
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Post by rewdownunder on Oct 21, 2021 14:03:20 GMT -5
Kind of looks like a concretion but would need to look at the back side. Often concretions form around fossils then the original form of the fossil is lost. Do you know where it is from or the age?
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Post by knave on Oct 21, 2021 14:33:03 GMT -5
Kind of looks like a concretion but would need to look at the back side. Often concretions form around fossils then the original form of the fossil is lost. Do you know where it is from or the age? Concretions were my thought also. My friend got them at an auction unlabeled they were with some ammonites.
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Post by knave on Oct 21, 2021 18:12:12 GMT -5
Went there. The back side looks like mushrooms. Little lines running to a point at the top.
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Post by stephan on Oct 21, 2021 22:50:25 GMT -5
Went there. The back side looks like mushrooms. Little lines running to a point at the top. I was just going to say that! đ
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Post by rmf on Oct 22, 2021 6:13:43 GMT -5
Went there. The back side looks like mushrooms. Little lines running to a point at the top. knave need a picture of the top. They side you are not showing. My guess is they might be Ptychodus teeth. these were sharks that ate things with shells. Some have rounded mushroom shaped teeth.
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