UGA Stratigraphy Lab

The data is in the strata

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

• Fossils and Strata
  of the Type Cincinnatian
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• Articulata

Strophomena

Strophomena spp.
SMH collection
Scale bar is 5 mm

Very similar to Tetraphalerella. On weathered or etched specimens, pseudopunctae in Strophomena can be seen to be irregularly distributed, whereas pseudopunctae in Tetraphalerella are arranged in radial rows. Some Cincinnatian Strophomena have been tentatively referred to by some workers as species of Trigrammaria, which is distinguished by a subtriangular folded shape.

Species

Strophomena concordensis Foerste, 1909
Occurrence: Arnheim
Reference: Schwimmer and Sandy, 1996

Strophomena hallie (Miller, 1874)
Occurrence: Economy
Reference: Dalvé, 1948

Strophomena maysvillensis Foerste, 1912
Occurrence: Mount Hope, Fairmount
Reference: Dalvé, 1948

Strophomena millionensis Foerste, 1912
Occurrence: Southgate
Reference: Dalvé, 1948

Strophomena nutans Meek, 1873
Occurrence: Waynesville
Reference: Dalvé, 1948

Strophomena planoconvexa Hall, 1847
Occurrence: Fairmount
Reference: Schwimmer and Sandy, 1996

Strophomena planumbona (Hall, 1847)
Occurrence: Arnheim, Waynesville, Liberty
Reference: Schwimmer and Sandy, 1996

Strophomena sinuata Meek, 1873
Occurrence: Fairmount
Reference: Dalvé, 1948

Strophomena vetusta (James, 1874)
Occurrence: Waynesville, Liberty, Whitewater
Reference: Dalvé, 1948

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

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