CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina nitida Martin 1943
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.
Original Description Test subglobular, more convex ventrally than dorsally; wall calcareous, finely perforate, completely covered with numerous fine papillae giving a granular appearance; periphery broadly rounded, slightly lobulate; all chambers exposed on dorsal side, only last whorl of five visible on ventral side; chambers inflated, increasing rapidly in size as added, last chamber extending slightly beyond previous ones, overhanging on ventral side to form a depressed umbilical area; dorsal sutures more or less distinct, nearly straight, slightly depressed; apertural face of last chamber flat, aperture a narrow slit extending from umbilicus about halfway along base of chamber toward periphery bordered on outer edge by a slight lip. Size: Maximum diameter 0.29 mm; minimum diameter 0.28 mm; maximum thickness 0.28 mm. " Extra details from original publication Remarks.- Probably the nearest relative to this small, compact species is Globigerina coalingensis Cushman & G. D. Hanna (1927), which is considerably larger and more ornamented over the dorsal chambers. The Lodo form has more chambers to the whorl and is flatter dorsally.
Range.-Samples I-X14 through I-S22+7.
References:
Martin, L. T. (1943). Eocene foraminifera from the type Lodo Formation, Fresno County, California. Stanford University Publications, Geological Sciences. 3(3): 1-35. gs
Globigerina nitida compiled by the pforams@mikrotax project teamviewed: 25-4-2025
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Martin 1943 plVII f1.JPG
Martin 1943 plVII f1.JPG
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