Masters Theses

Abstract

"The morphology of Sphaerogypsina as seen in thin section affords various characters useful in classification] 1) arrangement and composition of the wall (calcareous-perforate, radially crystalline); 2) layering of wall (like Gypsina, without layering or black line, having only microlamellae); 3) shape of test (always spherical); and 4) specific characters: size of test, order/unorder ratio, size of chambers, wall thickness, pore diameter, and type of embryonic apparatus.

Correlation of the above characters has allowed recognition of two new species. Comparisons with other genera strongly suggest placing the genus in the Family Gypsinidae (nom. correct.) rather than in the Acervulinidae or Planorbulinidae. Study of the wall of Sphaerogypsina has revealed apertures and stolons which were observed by Carpenter, Uhlig, and Bursch, but were overlooked by Brady, Galloway, and most other workers.

Compilation of data from the literature on Sphaerogypsina has resulted in a distribution chart and some ecological interpretations of the genus"--Abstract, page ii.

Advisor(s)

Frizzell, Don L. (Donald Leslie), 1906-1972

Committee Member(s)

Rupert, Gerald B., 1930-2016
Spreng, Alfred C., 1923-2012
Christiansen, Carl R., 1921-1997

Department(s)

Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geology

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1962

Pagination

iv, 58 pages

Note about bibliography

Includes bibliographical references (pages 47-53).

Time Period

Cenozoic

Rights

© 1962 Wayne C. Horton, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Foraminifera, Fossil -- ClassificationForaminifera, Fossil -- NomenclaturePaleontology -- Cenozoic

Thesis Number

T 1388

Print OCLC #

5938070

Electronic OCLC #

982658492

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