tag:blogger.com,1999:blog-11787852.post-51077749234037119002007-05-11T10:33:00.000-07:002007-05-11T10:33:00.000-07:00BTW, if you are wondering about the asymmetry of the acoustic receptors in 7, it might have been made to mimic Barn owls, which have no pinnas (external ear) but can still localize sounds in the vertical direction very well, thanks to asymmetric ears, one pointing up and the other down, http://www.wonderquest.com/owl-hearing.htm<BR/>shows an example about 1/3 of the way down.Anonymousnoreply@blogger.com