1 record found in the Index Nominum Genericorum database.
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Protohaploxypinus S. R. Samoilovitch, Trudy Vsesojuzn. Neftian. Nauchno-Issl. Geol.-Razvedochn. Inst. 75: 36. 1953.
T.: non designatus
Samoilovitch cited Pemphygaletes latissimus Luber as the type species, but it was never validly published. No combination in Protohaploxypinus was made by Samoilovitch.
FOSSIL-SPORAE DISPERSAE (107) 03 Apr 2003