History of Mammalia

	Revision 33 . . November 14, 2001 4:10 am by Dmerrill [breasts -> mammary glands (there are LOTS of mammals w/o breasts per se)]
	Revision 32 . . (edit) November 14, 2001 1:29 am by (logged).191.188.xxx

---

Difference (from prior major revision) (no other diffs)

Changed: 3c3

There are a few mammals--the monotremes--that lay eggs and do not have breasts, but they do produce milk for their young. (Live birth also occurs in a variety of non-mammalian species; it is not a diagnostic characteristic for class mammalia.)

There are a few mammals--the monotremes--that lay eggs and do not have mammary glands, but they do produce milk for their young. (Live birth also occurs in a variety of non-mammalian species; it is not a diagnostic characteristic for class mammalia.)