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Comparison and differentiation in fossil and recent specimens of the melongenid subgenus Rexmela in Florida

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Date Issued:
2009
Summary:
The subgenus Rexmela, located primarily in Florida, is newly evolved, dating back 1.6 million years, first occurring in the Ayer's Landing Member of the Caloosahatchee Formation. This subgenus has highly variably shell morphology and has led to the erection of several species and subspecies. In order to provide a quantitative methodology with which to differentiate between populations, samples of Recent and fossil populations were collected and measured for a variety of parameters. The parameters measured included length, width, spire height, and several angles, and allowed for a discriminate analysis to be completed. The analysis supported the distinction of several of the populations as ecophenotypes. Paleoenvironments of the fossil populations were then recreated using analogues of Recent populations.
Title: Comparison and differentiation in fossil and recent specimens of the melongenid subgenus Rexmela in Florida.
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Name(s): Pletka, Crystal.
Charles E. Schmidt College of Science
Department of Geosciences
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Date Issued: 2009
Publisher: Florida Atlantic University
Physical Form: electronic
Extent: x, 96 p. : ill. (some col.).
Language(s): English
Summary: The subgenus Rexmela, located primarily in Florida, is newly evolved, dating back 1.6 million years, first occurring in the Ayer's Landing Member of the Caloosahatchee Formation. This subgenus has highly variably shell morphology and has led to the erection of several species and subspecies. In order to provide a quantitative methodology with which to differentiate between populations, samples of Recent and fossil populations were collected and measured for a variety of parameters. The parameters measured included length, width, spire height, and several angles, and allowed for a discriminate analysis to be completed. The analysis supported the distinction of several of the populations as ecophenotypes. Paleoenvironments of the fossil populations were then recreated using analogues of Recent populations.
Identifier: 320764237 (oclc), 187215 (digitool), FADT187215 (IID), fau:2937 (fedora)
Note(s): by Crystal Pletka.
Thesis (M.S.)--Florida Atlantic University, 2009.
Includes bibliography.
Electronic reproduction. Boca Raton, Fla., 2009. Mode of access: World Wide Web.
Subject(s): Mollusks -- Habitat -- Florida
Gastropoda, Fossil -- Florida
Aquatic invertebrates -- Florida -- Identification
Evolutionary paleobiology -- Florida
Persistent Link to This Record: http://purl.flvc.org/FAU/187215
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Owner Institution: FAU