References for species Ceratinops obscurus (Chamberlin & Ivie, 1939)

Species Reference Comment Distribution
Masonetta obscura Chamberlin & Ivie 1939a: 64, f. 17-18
(PDF not available.)  (Dm). USA
Ceratinops obscura Ivie 1967: 127
(PDF not available.)  (Tm from Masonetta).  
Ceratinops obscura Kaston 1977: 24, f. 18-19
(PDF not available.)  (m).  
None noted here.
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