Sphaeroidinellopsis seminulina        

Class: Rotaliata  Subclass: Globigerinana  Order: Globorotaliida  Family: Globigerinidae

found in a core of ODP Leg 130 Site 806   Micronesia + Philippine Basin   Micronesia (FSM)   Site 806

Geological Time: Neogene  Miocene  Tortonian


the images are published under public domain in the below cited scientific report of the IODP, ODP and DSDP

View of a specimen of Sphaeroidinellopsis seminulina

exact size see reference, about 500?m +/- 250?m

The identification is based upon:
Chaisson, W.P., and Leckie, R.M., 1993: High-resolution Neogene planktonic foraminifer biostratigraphy of Site 806, Ontong Java Plateau (western equatorial Pacific). in Berger, W.H., Kroenke, L.W., Mayer, L.A., et al., Proc. ODP, Sci. Results, 130: College Station, TX (Ocean Drilling Program), 137−178. Plate 10, Fig. 8