Foraminifera source details
Cushman, J. A.; Campbell, A. S. (1936). A new Siphogenerinoides from California. Contributions from the Cushman laboratory for foraminiferal research. 12(4): 91-92.
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Cushman, J. A.; Campbell, A. S.
1936
A new Siphogenerinoides from California.
Contributions from the Cushman laboratory for foraminiferal research
12(4): 91-92
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Siphogenerinoides clarki Cushman & Campbell, 1936 † accepted as Orthokarstenia clarki (Cushman & Campbell, 1936) † (original description)