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Evolution and phylogeny of Pleurodira (Testudines) with the description of a new species of Bairdemys (Podocnemidae) from the middle Miocene of Venezuela

Grant number: 12/11604-1
Support type:Scholarships in Brazil - Master
Effective date (Start): August 01, 2012
Effective date (End): January 31, 2015
Field of knowledge:Biological Sciences - Zoology
Principal Investigator:Max Cardoso Langer
Grantee:Gabriel de Souza Ferreira
Home Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
Associated scholarship(s):13/07807-7 - Evolution of post-cranium and intra and interespecific variations in Pleurodiromorpha (Chelonii), BE.EP.MS

Abstract

Though neglected for a long time, one of the two lineages of Testudines (turtles and tortoises) the Pleurodira has been attracting the researchers, whose articles usually deal with descriptions of new species (extant and extinct), behavior or feeding habits, or phylogenetic analyzes of one of the subgroups of Pleurodira, Chelidae or Pelomedusoides, the latter subdivided in two lineages with extant taxa: Pelomedusidae and Podocnemidae. There some phylogenetic analyzes with terminal taxa from the main groups of Pleurodira, but only with molecular data. Therefore, a morphological data analysis containing taxa from all the clades of this group, including fossils, is necessary to better understand the evolutionary history of this lineage. In this dissertation, I describe a new species of Bairdemys (Podocnemidae) from the middle Miocene of Venezuela, and I include it in a phylogenetic analysis with extensive taxonomic sampling, including taxa from all the lineages of Pleurodira. This analysis is based on morphological characters (new and previously proposed ones) and it is the largest exclusive phylogenetic analysis ever made for Pleurodira, allowing inferences about the general patterns of diversification and morphology of the group. At the same time, the new described táxon shows morphological characters that, along with geological aspects of its type locality, allow inferences about a marine wave of diversification of Podocnemidae during the Cenozoic, which achieved great success, specially by the end of Oligocene and beginning of Miocene.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FERREIRA, GABRIEL S.; RINCON, ASCANIO D.; SOLORZANO, ANDRES; LANGER, MAX C. Review of the fossil matamata turtles: earliest well-dated record and hypotheses on the origin of their present geographical distribution. NATURWISSENSCHAFTEN, v. 103, n. 3-4 2016. Web of Science Citations: 11.
FERREIRA, GABRIEL S.; RINCON, ASCANIO D.; SOLORZANO, ANDRES; LANGER, MAX C. The last marine pelomedusoids (Testudines: Pleurodira): a new species of Bairdemys and the paleoecology of Stereogenyina. PeerJ, v. 3, JUN 30 2015. Web of Science Citations: 17.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
FERREIRA, Gabriel de Souza. Evolution and phylogeny of Pleurodira (Testudines) with the description of a new Bairdemys (Podocnemidae) species from the middle Miocene of Venezuela. 2015. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto Ribeirão Preto.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.