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Abstract Detail


Paleobotanical Section

Wang, Hongshan [1], Dilcher, David [1].

An Angiosperm Leaf Assemblage from the Warman Clay Pit (Middle Eocene, Claiborne Group), Western Tennessee.

A comprehensive examination of a well-preserved fossil plant assemblage from the Warman Clay pit (middle Eocene), Tennessee yielded about 50 angiosperm leaf taxa. A total of about 3,000 specimens were observed. With the aid of leaf epidermal features and co-occurring fruits and seeds, most of them can be confidently assigned to extant families and/or genera. Families that are recognized and ordered by abundance include Fabaceae, Lauraceae, Fagaceae, Annonaceae, Smilacaceae, Myrtaceae, Salicaceae, Moraceae, Rhamnaceae, Sapindaceae, Nyssaceae, Theaceae, Apocynaceae, Rubiaceae, Araliaceae. Members of the Fabaceae, Lauraceae and Fagaceae dominate the assemblage. Comparisons with the Late Cretaceous Cooper pit assemblage (Maastrichtian) and other coeval assemblages from the adjacent areas were made. Floristic changes of the Mississipi Embayment forests from the late Cretaceous to the middle Eocene based on leaf morphotypes will be presented.


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1 - Florida Museum of Natural History, Dickinson Hall, P.O. Box 117800, Gainesville, Florida, 32611, USA

Keywords:
Middle Eocene
Claiborne Formation
Tennessee
angiosperm.

Presentation Type: Oral Paper:Papers for Sections
Session: CP45
Location: Williford A/Hilton
Date: Wednesday, July 11th, 2007
Time: 9:00 AM
Number: CP45004
Abstract ID:2317


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