Zygospira
Zygospira modesta
SMH collection
Larger specimen is 5 mm wide
Zygospira cincinnatiensis
CMNH 38645
Scale bar is 1 cm
Zygospira cincinnatiensis
CMNH 38645
Scale bar is 1 cm
Species
Zygospira cincinnatiensis Meek
Occurrence: Mount Hope, Fairmount
Reference: Dalvé, 1948; Copper, 1977
Usually 5 primary lateral plications on either side of fold
Zygospira kentuckiensis James
Occurrence: Waynesville
Reference: Dalvé, 1948; Copper, 1977
Zygospira modesta (Say)
Occurrence: Fulton, Economy, Southgate, McMicken, Mount Hope, Fairmount, Bellevue, Corryville, Mount Auburn, Arnheim, Waynesville, Liberty, Whitewater, Elkhorn
Reference: Schwimmer and Sandy, 1996; Copper, 1977
Usually 7–9 primary lateral plications on either side of fold
