To: templar
An umbilical cord suggests a placenta, and only placental mammals have placentas. However, some reptiles, vipers if I recall correctly, have live births.
To: capitan_refugio
Some cartilaginous fishes as well. The cow-nosed ray, for example.
100 posted on
01/28/2004 11:21:56 PM PST by
Smokin' Joe
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