re: #513 austin_blue
440-300 MY. Brachs were the primary bivalves until the Permian disaster. It looks like a spirifer, based on shell shape, but there were thousands of genera.
440-300 MY. Brachs were the primary bivalves until the Permian disaster.
It looks like a spirifer, based on shell shape, but there were thousands of genera.
How did they get on a mountain in the middle of Tennessee?