Conostichus Trace Fossil

Trace fossil that might be some sort of sea anemone burrow. These traces fossils can be referred to as Conostichus. Fossils were found in the Bangor Limestone of Colbert County, Alabama. The traces were made in the Mississippian (Carboniferous) Period about 325 million years ago.

Thanks to Larry for the fossils.

Learn more about these type of fossils at the Indiana Geological Survey web site on a page written by Henry H. Gray:  Conostichus, an Enigmatic Fossil.