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†Pachylyroceras Ruzhentzev & Bogoslovskaya M. F. 1971
urn:lsid:organismnames.com:name:2335019
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†Pachylyroceras Ruzhentzev & Bogoslovskaya M. F. 1971
Ruzhentzev & Bogoslovskaya M. F. 1971. Namurian time in ammonoid evolution: early Namurian ammonoids. Trudy Paleont Inst, 133 1971: 1-382