The data is in the strata
Pterygometopus troosti
Occurrence: Murfreesboro, Pierce, Ridley, Lebanon
Reference: Wilson, 1949
Ludvigsen and Chatterton (1982) report that Achatella is the only pterygometopine occurring in the Ordovician rocks of Laurentia; I am unaware of the current taxonomic assignment of P. troosti
Comments or questions? Please contact Steven Holland at stratum@uga.edu
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