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Fossil collection records
Fossil organisms
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Classifications of taxa in groups
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Classification of Allen and Lester 1957
G. †
Lophospira
Whitfield 1886
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Lophospira serrulatus
Salter 1859
G. †
Cyrtoceras
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Cyrtoceras vallandinghami
Miller 1874
G. †
Pionodema
Foerste 1912
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Pionodema miniscula
Willard 1928
G. †
Rhynchotrema
Hall 1860
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Rhynchotrema argenturbiem
White 1874
G. †
Calliops
Delo 1935
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Calliops callicephala
Hall 1847