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Ulrich & Scofield, 1897
Subfamily Pterothecinae Wenz, 1938
Subfamily Bellerophontinae McCoy, 1851
Subfamily Knightitinae Knight, 1956 Recently,
Peter J....
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Bellerophontoidea McCoy, 1852 †Family
Bellerophontidae McCoy, 1852 †Subfamily
Bellerophontinae McCoy, 1852 (=Liljevallospiridae
Golikov & Starobogatov, 1989) †Subfamily...
- Bucanitidae, Pterothacidae, and
Tropododiscidae compare with the
subfamilies Bellerophontinae, Bucanitinae, Pterothacinae, and
Tropododiscinae included in the Bellerophontidae...