Nannotax Enabling nannofossil research

Description: Small sphenolith with long apical spine and compact base.

Remarks: One of the Oligo-Miocene boundary group of delicate sphenoliths (see also S. capricornutus, S. delphix). Characterised by a single long apical spine, and a compact base, in contrast to the flaring base of S. delphix. It is smaller and thinner than S. heteromorphosus.

Range: NP25 to NN1.

Synonym: Sphenolithus elongatus Martini, 1986.