Dissertation/Thesis Abstract

Cladistic Analysis of Juvenile and Adult Hominoid Cranial Shape Variables
by DiVito, Thomas A., II, M.A., Florida Atlantic University, 2011, 77; 1504156
Abstract (Summary)

Phylogenies constructed from skeletal data often contradict those built from genetic data. This study evaluates the phylogenetic utility of adult male, female, and juvenile hominoid cranial bones. First, I used geometric morphometric methods to compare the cranial bone shapes of seven primate genera (Gorilla, Homo, Hylobates, Macaca, Nomascus, Pan, and Pongo). I then coded these shapes as continuous characters and constructed cladograms via parsimony analysis for the adult male, female, and juvenile character matrices. Finally, I evaluated the similarity of these cladograms to one another and to the genetic phylogeny using topological distance software. Cladograms did not differ from one another or the genetic phylogeny less than comparisons of randomly generated trees. These results suggest that cranial shapes are unlikely to provide accurate phylogenetic information, and agree with other analyses of skeletal data that fail to recover the molecular phylogeny (Collard & Wood, 2000, 2001; Springer et al., 2007).

Indexing (document details)
Advisor: McCarthy, Robert C.
School: Florida Atlantic University
School Location: United States -- Florida
Source: MAI 50/02M, Masters Abstracts International
Subjects: Morphology, Evolution and Development, Systematic
Publication Number: 1504156
ISBN: 978-1-124-94745-7
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