nanno-taxonomy (8)
Coccolithales (2)
Calcidiscaceae (5)
Coccolithaceae (6)
Description: Small with two, diverging, apical spines, and usually a flaring base.
Remarks: One of the Oligo-Miocene boundary group of delicate sphenoliths (see also S. calyculus, S. delphix).
Range: NP25 and NN1.
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