Catalog - Hastigerina eocenica

CATALOG OF ORIGINAL DESCRIPTIONS: Hastigerina eocenica Berggren 1960

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.


Higher levels: pf_cat -> H -> Hastigerina -> Hastigerina eocenica
Other pages this level: H. aspera digitata, H. digitata, H. eocenica, H. klampisensis, H. murrayi, H. parapelagica, H. primitiva

Hastigerina eocenica

Citation: Hastigerina eocenica Berggren 1960
Rank: Species
Type specimens: fig. 1a-c Pl, 5, Pl, 10, fig. 2a-c fig. 2a-c

Current identification/main database link: Pseudohastigerina wilcoxensis (Cushman & Ponton 1932)


Original Description

Test free, early chambers slightly trochoid, adult planispiral, early portion involute, final whorl somewhat evolute but not uncoiling, biumbilicate, strongly symmetrical, periphery rounded, peripheral margin lobulate, outline oval to subcircular; chambers subspherical to ovate, inflated, particularly in the final chamber, 5-6 (occasionally 7) in the final whorl, 15-16 visible 2½ whorls extending into the narrowing umbilicus; sutures deeply depressed, radially curved on both sides of the test; wall calcareous, densely perforated by distinct small pores, surface otherwise smooth ad nglossy; aperture interiomarginal, a long low equatorial arch extending along the base of the septal margin of the final chamber and becoming quite high in peripheral view; thickened apertural lip usually present, occasionally with a sharp rim. 

Size:
Dimensions in mm.- Holotype Paratype Paratype Maximum height in umbilical view 0.380 0.325 0.325 Maximum width in umbilical view 0.310 0.250 0.390 Maximum inflation of test in edge view 0.220 0.190 0.210 Diameter of aperture in peripheral view from point of opening to point of closure 0.100 - 0.130

Etymology:

Extra details from original publication

Editors' Notes
original combination not double checked

References:

Berggren, W. A. (1960). Some planktonic foraminifera from the Lower Eocene (Ypresian) of Denmark and northwestern Germany. Stockholm Contributions in Geology. 5: 41-108. gs


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Hastigerina eocenica compiled by the pforams@mikrotax project team viewed: 24-5-2022

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Short stable page link: https://mikrotax.org/pforams/index.php?id=131694 Go to Archive.is to create a permanent copy of this page - citation notes



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