Date of Award
2009
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Abstract
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.
Extent
x, 96 p. : ill. (some col.).
Recommended Citation
Pletka, Crystal., "Comparison and differentiation in fossil and recent specimens of the melongenid subgenus Rexmela in Florida" (2009). Electronic Theses and Dissertations 2000 - 2009. 1639.
https://digitalcommons.fau.edu/etd_general_5/1639
Identifier
FADT187215
Comments
by Crystal Pletka.|Thesis (M.S.)--Florida Atlantic University, 2009.|Includes bibliography.|Electronic reproduction. Boca Raton, Fla., 2009. Mode of access: World Wide Web.|by Crystal Pletka.