| Woodburne M.O. Phyletic diversification of the Cormohipparion occidentale complex (Mammalia; Perissodactyla, Equidae), late Miocene, North America, and the origin of the Old World Hippotherium datum. - New York: American Museum of Natural History, 2007. - 138 p. - (Bulletin of the American Museum of Natural History; N 306). - ISSN 0003- 0090
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Abstract ........................................................ 3
Introduction .................................................... 4
Abbreviations and Definitions ................................... 4
Institutional Abbreviations ................................... 4
Morphological Conventions ..................................... 7
Chronological and Operational Terms ........................... 7
Nomenclature for Dental Position and Crown Morphology ......... 8
Mammal Age Terms .............................................. 8
Quarry Terms .................................................. 9
Methodology ..................................................... 9
Measurements .................................................. 9
Character Analysis ........................................... 10
Statistical Computations ..................................... 10
Stratigraphic and Chronological Framework ...................... 17
Previous Investigations ........................................ 25
Systematic Paleontology ........................................ 26
Cormohipparion ............................................... 26
Cormohipparion occidentale ................................... 27
Cormohipparion matthewi ...................................... 51
Cormohipparion johnsoni ...................................... 57
Cormohipparion merriami ...................................... 65
Cormohipparion fricki ........................................ 70
Cormohipparion skinneri ...................................... 80
Cormohipparion sp ............................................ 86
Cormohipparion quinni ........................................ 89
Results ........................................................ 89
Phyletic Analysis ............................................ 91
Speciation within Cormohipparion occidentale ................. 96
Origin of the Hippotherium Datum ............................... 98
Conclusions ................................................... 133
Acknowledgments ............................................... 134
References .................................................... 134
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