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1 record found in the Index Nominum Genericorum database.

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Diacritical Conversion

Calcisphaera W. C. Williamson, Philos. Trans. 171: 521. 1880.
LT.: C. robusta W. C. Williamson (vide S. A. Miller, N. Amer. Geol. Paleont. 155. 1889)
Middle Devonian; U.S.A. (Erie County, Ohio).
FOSSIL-CHAROPHYCEAE-TROCHILISCACEAE (2) 9 Feb 1996

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