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1 record found in the Index Nominum Genericorum database.

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Diacritical Conversion

Protoumbella B. L. Mamet, Canad. J. Earth Sci. 7: 1169. Aug 1970.
T.: P. saccamminiformis (E. V. Bykova) B. L. Mamet (Umbella saccamminiformis E. V. Bykova)
Upper Devonian (Famennian); U.S.S.R. (Uryupinsk district, Stalingrad Region, Russia).
FOSSIL-CHAROPHYCEAE?-UMBELLACEAE (2) 9 Feb 1996

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