joke of the day.................作者:
jasonpoon 時間: 2012-4-23 17:16
Noted recently from a documentary that some "ovoviviparous" shark embryo actually hatched quite early inside the "uterus" and develop an placenta-like organ attaching to the uterine wall of the mother shark via an "umbilical" cord for furter nurishment and development before hatching.
This may further blur the line between "ovo" and "vivi" parity...作者:
Mercury 時間: 2012-4-23 18:20 標題: 回覆 #4 jasonpoon 的帖子
For example: Lemon Sharks
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