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Revision of Sphenolithus calyculus from Mon, 31/12/2007 - 18:34

Thu, 31/01/2008 - 13:47 — Jeremy Young
calyculus.jpg
Citation: 
Sphenolithus calyculus Bukry, 1985

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. 

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