Dear Jennifer, here is a paper which might interest you
Orlando L., Mashkour M., Burke A., C. Douady, V. Eisenmann and Hänni
C. 2006. Geographic Distribution of an Extinct Equid (E. Hydruntinus,
Mammalia, Equidae) Revealed by Morphological and Genetical Analyses of
Fossils. Molecular Ecology 15 (9): 2083-2093
best wishes
Marjane
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