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Did Alternating Dispersal and Vicariance Contribute to Increased Biodiversification During the Great Ordovician Biodiversification Event?: A Phylogenetic Test Using Brachiopods

Censullo, Shaolin Meliora
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1586947231228706

Abstract Details

2020, Master of Science (MS), Ohio University, Geological Sciences.
The evolution and biogeographic changes of three Ordovician brachiopod genera were examined using species-level phylogenetic analyses and phylogenetic biogeographic analyses in order to examine geological drivers of biogeographic evolution during the Great Ordovician Biodiversification Event (GOBE). Species-level phylogenetic hypotheses are reconstructed for Laurentian species of Hesperorthis Schuchert and Cooper 1931, Mimella Cooper, 1931, and Oepikina Salmon, 1942 using Bayesian inference. The reconstructed phylogenetic relationships were then used to investigate biogeographic patterns within the speciation of each lineage in order to evaluate how speciation occurred during the GOBE. Results indicate that alternating dispersal and vicariance events throughout the lineages of Hesperorthis, Mimella and Oepikina contributed to their increase in diversification during the Middle Ordovician which conforms to the BIME model of diversification. The oscillations of dispersal and vicariance events were related to fluctuating sea-level changes observed during the Middle to Late Ordovician.
Alycia Stigall, Dr. (Advisor)
129 p.
Geology; Paleontology
Phylogenetics; biogeography; systematics; Ordovician; biodiversity; GOBE; brachiopods; Bayesian; paleobiogeography

Recommended Citations

Citations

  • Censullo, S. M. (2020). Did Alternating Dispersal and Vicariance Contribute to Increased Biodiversification During the Great Ordovician Biodiversification Event?: A Phylogenetic Test Using Brachiopods [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1586947231228706

    APA Style (7th edition)

  • Censullo, Shaolin. Did Alternating Dispersal and Vicariance Contribute to Increased Biodiversification During the Great Ordovician Biodiversification Event?: A Phylogenetic Test Using Brachiopods. 2020. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1586947231228706.

    MLA Style (8th edition)

  • Censullo, Shaolin. "Did Alternating Dispersal and Vicariance Contribute to Increased Biodiversification During the Great Ordovician Biodiversification Event?: A Phylogenetic Test Using Brachiopods." Master's thesis, Ohio University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1586947231228706

    Chicago Manual of Style (17th edition)

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This open access ETD is published by Ohio University and OhioLINK.