CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina apertura Cushman 1918
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.
Citation: Globigerina apertura Cushman 1918Rank: speciesDescribed on page(s) : 57Type specimens: pl. 12, fig. 8, X 60. Fig. 8a, dorsal view; b, side view; c, ventral view. Type age (chronostrat): Miocene. Yorktown formation.Type locality: Suffolk, Virginia, U. S. A.Type repository: Washington USNM
Original Description Test spiral, depressed, all the chambers visible from the dorsal side, the four chambers making the last-formed coil visible from the ventral side, chambers rapidly increasing in size; aperture very large, semicircular, opening into the central umbilical cavity. Size: Diameter, 0.50 millimeter. Etymology: Extra details from original publication This species may be distinguished by its extremely large semicircular aperture, compressed test, and few chambers. Editors' Notes
References:
Cushman, J. A. (1918b). Miocene foraminifera of the coastal plain of the United States. U.S. Geological Survey Bulletin. 676: 39-73. gs
Globigerina apertura compiled by the pforams@mikrotax project teamviewed: 4-2-2023
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