Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Clary, Renee M.
Committee Member
Nagel, Athena
Committee Member
Kirkland, Brenda L.
Committee Member
Phillips, George
Date of Degree
8-8-2023
Document Type
Graduate Thesis - Campus Access Only
Major
Geosciences
Degree Name
Master of Science (M.S.)
College
College of Arts and Sciences
Department
Department of Geosciences
Abstract
Evidence of the Cretaceous-Paleogene (K-Pg) extinction can be seen across the Mississippi Embayment, however research examining the K-Pg boundary in the state of Mississippi is lacking. The objective of this study addresses how macrofauna changed across the K-Pg boundary in Oktibbeha County, Mississippi and subsequent comparison to other Early Paleogene and Late Cretaceous benthic marine macrofaunal localities. Comparison included previously collected material as well as specimens collected during this study in order to reconstruct the biological community living on the seafloor in the earliest Paleocene Mississippi Embayment. The primary fauna present after the K-Pg extinction was mainly composed of small suspension and deposit feeding oysters and clams as well as carnivorous gastropods. New Paleocene fauna and survivor species exhibited drastically smaller body sizes than organisms in the Cretaceous; postulated to be due to a relative decrease in primary producers and environmental nutrients.
Recommended Citation
Broussard, Joshua, "Changes in paleobiodiversity across the K-Pg boundary in Oktibbeha County, Mississippi" (2023). Theses and Dissertations. 5889.
https://scholarsjunction.msstate.edu/td/5889