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56 Šn/520-sep.
HOWELL, Benjamin Franklin
Middle-Upper Cambria Transition faunas of North America / B.F. Howell - Donald Duncan. -- S.1-10, : 1 Pl. -- In: Bulletin of the Wagner Free Institute of Science. -- 1939, Vol. 14, No. 1. -- separát. -- bibl.. -- Citováno jako: HOWELL, B.F. - DUNCAN, Donald Middle-Upper Cambrian Transition...Bull. Wagner Free Inst. Sci. 1939, Vol. 14, No. 1, S.1-10, 1 Pl.
Albansia Howell, 1937
Arapahoia Miller, 1936
Deissella, new genus
Homagnostus Howell, 1935
Micragraulos Howell, 1937
Piedmontia Resser, 1938
Perioura Resser, 1938
56
63434
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