Crawfordsville Seafloor Crinoids Association

Cyathocrinites harrodi, Macrocrinus mundulus, Unkown Crinoid Stem, Coral Section

Geological Time: Lower Mississippian, Osagean Stage

Size: Cyathocrinites Crinoid: Crown 17 mm long by 30 mm wide with stem 20 mm long. Macrocrinus Crinoid: Crown 22 mm long by 15 mm wide with stem 20 mm long. Crinoid Stem: 47 mm long by 8 mm wide. Coral Section: 60 Mm long by 15 mm wideMatrix: 92 mm by 75 mm.

Fossil Site: Crawfordsville, Indiana

Crawfordsville Crinoid AssociationDescription: A fine example of an Inadunate Cladid crinoid of the Family Cyathocrinidae, the smaller crinoid is known as Cyathocrinites harrodi. The larger crinoid is a Camerate crinoid of the Family Batocrinidae known as Macrocrinus mundulus. They are very esthetically displayed on this shield-shaped block of siltstone matrix. The section of stem obviously belongs to a much larger crinoid, while the coral section attests to the warm-water environment in which they all lived.

click crinoid pictures to enlarge


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