The fossils , frequently found in St. Louis , include the Bryozoan - corals '' Lithostrotion `` and '' Lithostrotionella `` and the Rugosan '' Fenestrellina `` .
Fossils commonly found in the St. Louis include the bryozoan corals `` Lithostrotion '' and `` Lithostrotionella '' and the rugosan `` Fenestrellina '' .