The Mammary Gland and Its Origin During Synapsid Evolution

@article{Oftedal2004TheMG,
  title={The Mammary Gland and Its Origin During Synapsid Evolution},
  author={O. Oftedal},
  journal={Journal of Mammary Gland Biology and Neoplasia},
  year={2004},
  volume={7},
  pages={225-252}
}
  • O. Oftedal
  • Published 2004
  • Medicine, Biology
  • Journal of Mammary Gland Biology and Neoplasia
  • Lactation appears to be an ancient reproductive trait that predates the origin of mammals. The synapsid branch of the amniote tree that separated from other taxa in the Pennsylvanian (>310 million years ago) evolved a glandular rather than scaled integument. Repeated radiations of synapsids produced a gradual accrual of mammalian features. The mammary gland apparently derives from an ancestral apocrine-like gland that was associated with hair follicles. This association is retained by monotreme… CONTINUE READING
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