A statistical study of microfossils by application of mass data processing and computer techniques
Frost, Stanley H., 1939-||Rubel, Daniel N.
M.S. (Master of Science)
Department of Geology
Samples of Lepldocvcllna (Leoldocycllna) macdonaldi from the late Eocene of Central America were investigated and compared statistically by analysis of variance. Samples were studied from collecting localities at Ixtapa and Simojovel in the State of Chiapas, Mexico. It was considered necessary to take into account measurements of all aspects of the test. Two of these parameters, relationship of protoconch to duteroconch and type of periembryonic chambers, showed no significant variation at the specific level. Two other parameters, height of the fifth equatorial chamber and height of lateral chambers, proved to yield significant variation for every comparison made. Significant morphological variation was found between specimens from Ixtapa and Simojovel. Significant morphological variance was also found between specimens from two collecting localities near Simojovel as compared with all the others. The simple analysis of variance was found to yield valid results while the complex analysis of variance did not. The objective approach was postulated as being necessary for definition and re-examination of low level taxa.
Giliberto, Richard Joseph, "A statistical study of microfossiles by application of mass data processing and computer techniques" (1967). Graduate Research Theses & Dissertations. 572.
iv, 58 pages
Northern Illinois University
Rights Statement 2
NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.