Lyropora sp.

Ridenhower Formation, Paint Creek Group
Locality: Vogel School site, near Floraville, Illinois

Note: Often incorrectly referred to as the Paint Creek Formation
Paint Creek is the Group name
The city is often cited as Millstadt, Illinois
when in fact it should be Floraville, Illinois

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These fossils illustrate both sides of the Lyropora

These 2 specimens (of different size) may be the same species but of a different age?

In life, fenestrate was attached to the opening between the "wings" like a web,
similar to the attachment of fenestrate on the screw-like axis of the bryozoan Archimedes.

Matrix: Limestone lens

The Ridenhower formation
is known for blastoids and the Lyropora is often overlooked.

Barry Sutton

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Barry Sutton

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