Astylospongia praemorsa sponge fossil found in the Silurian Period Waldron Shale of Indiana.
For more information, see this previous posting.
Monday, October 14, 2013
Waldron Shale Fossil Astylospongia
Astylospongia praemorsa sponge fossil found in the Silurian Period Waldron Shale of Indiana.
For more information, see this previous posting.
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