Statistical analysis of the brachiopod genus Stegerhynchus from the Waldron Shale (Silurian) of Waldron, Indiana
Creators:Ghist, John Martin
Advisor:Sweet, Walter C.
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Publisher:The Ohio State University
Series/Report no.:The Ohio State University. Department of Geology and Mineralogy Senior Theses; 1973
Five species representing Rhynchonella were described by Hall (1863) and by Beecher and Clarke (1889) as being represented in the Waldron shale of Middle Silurian age from the type locality at Waldron, Indiana. One species has since been removed from this genus and placed under the genus Ucinulus while the others have been placed under the genus Stegerhynchus. The purpose of the paper was to statistically analyze the four species under the genus Stegerhynchus and it has been shown that S. acinus is still valid as a species while S. neglecta, S. indianense and S. whitii should be grouped under the name S. neglecta since it was the first name of the three proposed.