Dental Character Reversal

Gavin J. Prideaux

in Systematics and Evolution of the Sthenurine Kangaroos

Published by University of California Press

Published in print January 2004 | ISBN: 9780520098459
Published online March 2012 | e-ISBN: 9780520916050 | DOI:
Dental Character Reversal

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This chapter examines examples of phylogenetic character reversal within the sthenurine dentitions and considers possible developments mechanisms that might have led to character re-expression. It explains that the mesocrista, urocrista, preprotocrista, and posthydpocristid are lacking from the molars of the three most plesiomorphic sthenurine taxa, including Hadronomas, Metasthenurus, and Sthenurus andersoni. The chapter also describes other examples of apparent evolutionary reversals in the macropodoid cheek dentition, such as the re-emergence of the parametacristid.

Keywords: phylogenetic character; character reversal; sthenurine dentitions; character re-expression; Hadronomas; Metasthenurus; Sthenurus andersoni; macropodoid; cheek dentition

Chapter.  2464 words. 

Subjects: Zoology and Animal Sciences

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