UGA Stratigraphy Lab

The data is in the strata

Hesperorthis

Species

Hesperorthis australis Cooper
Occurrence: Murfreesboro?, Pierce?, Ridley, Carters
Reference: Wilson, 1949; Cooper, 1956
Specimens formerly assigned to Hesperorthis tricenaria, Orthis tricenaria; Note that Cooper (1956) questions the occurrence of this species in the Murfreesboro, and does not list any Hesperorthis species for the Pierce.

Hesperorthis quadrata Cooper
Occurrence: Lebanon
Reference: Cooper, 1956
Specimens formerly assigned to Hesperorthis tricenaria, Orthis tricenaria

Hesperorthis "tricenaria"
Occurrence: Upper Carters
Reference: Wilson, 1949; Cooper, 1956