This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Linked specimens: USNM-5843 USNM-5842 USNM-5844
Current identification/main database link: Acarinina subsphaerica (Subbotina 1947)
Test free, trochospiral, subglobular to high spiredperiphery rounded, peripheral outline lobulate, all chambers of the 2 and one-half to three whorls visible on the spiral side, with earlier whorls distnctly elevated above the level of the four to five chambers of the final whorl, only the final whorl visible on the umbilical side; final chamber may be somewhat reduced in size and bulla-like; sutures distinct, depressed, slightly curved; aperture a small umbilical arch bordered with a narrow lip. Greatest diameter of holotype 0.20 mm.; height of spire 0.23 mm.
Original Description
Size: Greatest diameter of holotype 0.20 mm., height of
spire 0.23 mm.
Extra details from original publication
Remarks: G. chascanona, new species, differs from G. aquiensis, new species, and G. spiralis Bolli in having a very prominently spinose surface, smaller umbilical area, lower aperture, and in being much smaller in size.
Loeblich, A. R. & Tappan, H. (1957b). Planktonic foraminifera of Paleocene and early Eocene Age from the Gulf and Atlantic coastal plains. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin. 215: 173-198. gs V O Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gsReferences:
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Globigerina chascanona compiled by the pforams@mikrotax project team viewed: 23-1-2021
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