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Notes and References
This item contains 3 references.
*This reference contains 2 citations:
- Origin of the Fittest, 1887, p 368 et seq.
- " The Mechanical Origin of the Hard Parts of the Mammalia," American Journal of Morphology, 1889, p. 148
†Animal Mechanism, 1874, pp. 88, 89
*"On the Osteology of Mesohippus and Leptomeryx," American Journal of Morphology, 1891, p. 385