This horn coral was found in Clark County, Indiana. It is of the Devonian Period and I am still try to figure out its identification.
UPDATE (2021): This could be a Bordenia knappi (Hall, 1882). Found in the Speed Limestone of Clark County, Indiana USA.
2 comments:
Could it be related to Acathophyllum?
I am not sure. Do you have any references that describe the Acathophyllum?
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