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  • Bill Heimbrock commented on Matt Croxton‘s Fossil #006436 5 years, 7 months ago

    5 years, 7 months ago
    5 years, 7 months ago

    To address Jennifer Bauer’s question of whether it can be a Constellaria sp Bryozoan, sometimes it’s not easy. Coral are holes with septa running radially from the edges of the holes towards the center. Constellaria have monticules or raised bumps that run radially from the center to away from it. This can be an optical illusion.
    Take a look at this Protaraea richmondensis from Camden Ohio. If you look at it one way, you see bryozoan monticules. If you look at it the other way, you see holes. http://www.drydredgers.org/fieldtrips/trip201410/large_marked/PA250183.jpg

    Here’s a Conularia with the same problem. http://www.drydredgers.org/fieldtrips/trip201505/large/P6040087.JPG