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Paleoecology of the Freshwater Ampullariidae from the Late Oligocene Nsungwe Formation of Tanzania

Abstract Details

2017, Master of Science (MS), Ohio University, Geological Sciences (Arts and Sciences).
This study examines morphological diversification of the late Oligocene ampullariid species from the Rukwa Rift Basin of Tanzania. Six new species of ampullariids are described, including five species of Lanistes and one species of Carnevalea. The high-spired Lanistes species described record the earliest appearance of this morphotype in the fossil record. Carnevalea santiapillai records the first appearance of this genus outside the Eocene of Oman. Paleoecological interpretations suggest a paludal to lacustrine ecology for C. santiapillai and a lacustrine ecology for L. nsungwensis. Lanistes songwensis and L. songweellipticus were interpreted as fluviate species whereas L. microovum and L. songweeovum were capable of inhabiting both lentic and lotic habitats. Morphological variations among paleoenvironments provide evidence for tectonically induced local radiation of Lanistes. Overall, this study provides valuable insight onto the taxonomy, evolution and the biogeographic affinities of the Paleogene freshwater gastropods of Afro-Arabia, and thus contributes significantly to closing the “African Gap.”
Alycia Stigall (Advisor)
Nancy Stevens (Committee Member)
Daniel Hembree (Committee Member)
Gregory Springer (Committee Member)
158 p.

Recommended Citations

Citations

  • Epa, Y. R. (2017). Paleoecology of the Freshwater Ampullariidae from the Late Oligocene Nsungwe Formation of Tanzania [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou149250551093219

    APA Style (7th edition)

  • Epa, Yuwan. Paleoecology of the Freshwater Ampullariidae from the Late Oligocene Nsungwe Formation of Tanzania. 2017. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou149250551093219.

    MLA Style (8th edition)

  • Epa, Yuwan. "Paleoecology of the Freshwater Ampullariidae from the Late Oligocene Nsungwe Formation of Tanzania." Master's thesis, Ohio University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou149250551093219

    Chicago Manual of Style (17th edition)