Catalog - Globigerina decepta

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina decepta 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.


Higher levels: pf_cat -> G -> Globigerina -> Globigerina decepta
Other pages this level: << < G. corpulenta, G. crassa, G. crassaformis, G. cretacea, G. cretacea delrioensis, G. cretacea eggeri, G. cretacea esnehensis, G. cretacea saratogaensis, G. cristata, G. cristatiformis, G. cryophila, G. cyclostoma, G. danica, G. danvillensis, G. daubjergensis, G. decepta, G. depressa, G. depressa d’Orbigny, G. detrita, G. difformis, G. digitata, G. dinodensis, G. diplostoma, G. dissimilis, G. druryi, G. druryi decoraperta, G. dubia, G. dubia lakiensis, G. dubiata, G. dudrouensis, G. dutertrei> >>

Globigerina decepta

Citation: Globigerina decepta Martin 1943
Rank: Species
Type locality: Lodo Gulch, Panoche Quadrangle, Fresno County, California.
Type age (chronostrat): Early Eocene
Type sample (& lithostrat): Sample I-S7-119, Lodo formation
Type specimens: Plate VII, figures 2a, 2b, 2c; Holotype.-Stanford Univ. Paleo. Type Coll. No. 7399.
Type repository: Stanford; Paleontological Type Collection, Stanford University, Calif.
Described on page(s) : 114-5

Linked specimens: USNM-38969 USNM-559455

Current identification/main database link: Acarinina bullbrooki (Bolli 1957)


Original Description
Test subglobular, dorsal side nearly flat, ventral side strongly convex; wall calcareous, coarsely perforate, covered with numerous small spiny protuberances, giving a granular appearance; periphery bluntly angled to rounded, lobulate; all chambers visible on dorsal side, earliest ones indistinct, later ones inflated; ventrally only last-formed whorl of about 4 chambers visible; chambers generally inflated, increasing rapidly in size as added, last chamber appearing somewhat detached from the others; dorsal sutures oblique, almost tangential, slightly depressed, ventral sutures straight, depressed; umbilical area on ventral side depressed; aperture an elongate opening, crescentic at its mid-point, on ventral side, extending from umbilicus toward periphery about halfway along base of apertural face of last-formed chamber.

Size: Maximum diameter 0.27 mm.; minimum diameter 0.25 mm.; maximum thickness 0.19 mm.

Extra details from original publication
Remarks.-This is a variable species, some specimens having more inflated chambers and more depressed sutures. It seems to be close to Globigerina topilensis Cushman of Howe (1939) but has less inflated, less detached chambers and is less coarsely spinose.

Range.-Samples I-S2+48 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


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Globigerina decepta compiled by the pforams@mikrotax project team viewed: 19-9-2021

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