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not horn coral but what is it?


val horn

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Found something new to me in a marine late cretaceous site in Maryland.  I would have thought it horn coral but they were long extinct.  A friend suggested rudist .  All help will be appreciated

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Yes, though the rugose horn corals became extinct during  the Great Dying at the close of the Permian, the Scleractinia did produce many similar looking forms in later times.  

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Tortoise Friend.

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10 minutes ago, val horn said:

thank you that makes good sense.  Now I get to wonder why it seems rare in the site.

Well, they are known as solitary corals...............:BigSmile:

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Paleozoic corals and other fossils occasionally show up in the creeks and beaches in Maryland, New Jersey etc.  Silurian and Devonian rocks occur not far inland, and remember the mountains were much higher back in the Cretaceous so mountain streams and rivers had a steeper grade and could transport fossil-bearing gravel further than they can today.  Your fossil is certainly a rugosan coral, not a rudist.

 

Don

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5 hours ago, Tidgy's Dad said:

Well, they are known as solitary corals...............:BigSmile:

 

Groan! :shakehead:

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Mark.

 

Fossil hunting is easy -- they don't run away when you shoot at them!

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