Evolution: Ostrich penis; odd convergence (Introduction)
by David Turell 
, Tuesday, December 13, 2011, 20:56 (4707 days ago) @ David Turell
Some birds have a penis and it becomes erect, but it ues a lymphatic system of enlargement, while mammals use blood:
http://www.scientificamerican.com/article.cfm?id=ostrich-penis-clears-evolutionary-myst...
Complete thread:
- Evolution Early animal fossil -
David Turell,
2011-12-12, 02:50
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- Evolution: Lungfish and walking -
David Turell,
2011-12-13, 15:26
- Evolution: Ostrich penis; odd convergence -
David Turell,
2011-12-13, 20:56
- Evolution: Minor speciation occurs -
David Turell,
2011-12-20, 01:11
- Evolution: Minor speciation occurs - dhw, 2011-12-20, 12:56
- Evolution: Stasis or not? -
David Turell,
2011-12-21, 15:33
- Evolution:Pre-Cambrian gene explosion - David Turell, 2011-12-25, 23:00
- Evolution: Minor speciation occurs -
David Turell,
2011-12-20, 01:11
- Evolution: Ostrich penis; odd convergence -
David Turell,
2011-12-13, 20:56
- Evolution: Lungfish and walking -
David Turell,
2011-12-13, 15:26