3.9" Archimedes Screw Bryozoan Fossil - Missouri

Here is an Archimedes sp. from the Warsaw Formation of Missouri. This unusual cork-screw shaped bryozoan commonly referred to as an "Archimedes Screw" is unique to the Mississippian aged rocks of North America.

Bryozoans are microscopic aquatic invertebrates that live in colonies, forming skeletal structures similar to corals. Each skeletal structure has a form unique to each particular species. The individual byrozoans forming these colonies are filter feeders called zooids, straining nutrients from the surrounding water.
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DETAILS
SPECIES
Archimedes sp.
LOCATION
Lincoln Co., Missouri
FORMATION
Warsaw Formation
SIZE
3.9" long on 4.2x2.1" matrix
CATEGORY
ITEM
#68672
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