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†Clarkognathus Kozur 1979
urn:lsid:organismnames.com:name:165012
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†Clarkognathus Kozur 1979
Kozur 1979. The main events in the Upper Permian and Triassic conodont evolution and its bearing to the Upper Permian and Triassic stratigraphy. Rivista Italiana di Paleontologia e Stratigrafia, 85(3-4) 1979: 741-766