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-58002
Current identification/main database link: Acarinina esnaensis (LeRoy 1953)
Original Description
Test roughly quadrate in ventral view, low trochoid spiral, flattened dorsally, umbilicate ventrally; chambers inflated, usually four in last whorl, rarely five, gradually increasing in size as added, last one rather strongly inflated; sutures distinct, strongly depressed on ventral side; periphery broadly rounded, lobulate; wall roughened with minute nodes; aperture rather large, arched, at base of last chamber.
Size: Diameter 0.50-0.64 mm.; thickness 0.39 mm.
Extra details from original publication
This specjes may be identified by its quadrate outline and by the strongly inflated last chamber. The form differs from Globigerina quadrata White described from the Upper Cretaceous of Mexico by exhibiting more inflation of the last chamber, by having a roughened wall, and by showing a larger ventral umbilical depression. Some workers would probably assign this form to Globorotalia crassa (Cushman) var. densa (Cushman)
Berggren, W. A., Pearson, P. N., Huber, B. T. & Wade, B. S. (2006b). Taxonomy, biostratigraphy, and phylogeny of Eocene Acarinina. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 41(Chap 9): 257-326. gs V O LeRoy, L. W. (1953). Biostratigraphy of the Maqfi Section, Egypt. Geological Society of America, Memoir. 54: 1-73. gsReferences:
![]() |
Globigerina esnaensis compiled by the pforams@mikrotax project team viewed: 28-1-2021
Short stable page link: http://mikrotax.org/pforams/index.php?id=130467 Go to Archive.is to create a permanent copy of this page - citation notes |