UGA Stratigraphy Lab

The data is in the strata

• UGA
• Geology Dept.
• Stratigraphy Lab
• Steven Holland

• Fossils and Strata
  of the Type Cincinnatian
• Fossils
• Stratigraphy
• References
• Links to Other Cincinnatian Sites
• Acknowledgments
•  
• Crinoidea

Glyptocrinus

Glyptocrinus decadactylus
Photo courtesy of Jack Kallmeyer
Scale bar is 1 cm

Glyptocrinus sp. columnals
SMH collection

Glyptocrinus is distinguished by rays that branch twice on the calyx, such that twenty arms exit from the calyx. In Pycnocrinus, the rays bifurcate once on the calyx; the ten arms immediately branch above the calyx, forming twenty arms.

Species

Glyptocrinus decadactylus Hall
Occurrence: Fairmount
Reference: Dalvé, 1948
Very similar to Pycnocrinus dyeri

Glyptocrinus fornshelli Miller
Occurrence: Waynesville
Reference: Dalvé, 1948
More conical cup than Pycnocrinus dyeri

Glyptocrinus sp.
Occurrence: Fulton
Reference: Dalvé, 1948

Comments or questions? Please contact Steven Holland at stratum@uga.edu

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