Name:
Pentremites sp.
Age: Mississippian
Formation: Ridenhower Formation
Location: Millstadt, Illinois
Size: Plate is 4.4'' X 5.8''
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This is a very displayable plate of fossils from the Mississippian of Illinois. There are 7 blastoids, Pentremites sp., plus bryozoan colonies on the slab. All of the fossils are quite inflated and exhibit wonderful detail. The plate structure of the blastoids is superb, and the wide ambulacra are clearly defined. Even the small spiracles at the tops of the blastoids are easily seen. The fossils have great color and contrast and are well presented on the large, natural slab of shale. This is a very attractive plate of extinct blastoid fossils from the Ridenhower Formation.
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