Nannotax Enabling nannofossil research

Description: Beehive shaped sphenolith, apical elements not in extinction in vertical poition. No spine, upper and lower parts of similar size.

Remarks: Lower and Middle Miocene sphenoliths are highly variable and S. moriformis is something of a bucket identification.

Size: 3-8 microns (size varies considerably between samples, but there have been no systematic studies)

Range: E. Eocene to NN10.

Synonym: S. pacificus Martini, 1965.

Variant: S. compactus Backman, 1980 - small form.