[Taxacom] Two kinds of nictitating membranes
jcclark-lists at earthlink.net
Mon Mar 23 20:54:39 CDT 2009
On 2009-03-23 08:09, Kenneth Kinman wrote:
> (1) Are there any fish (either actinopterygian or sarcopterygian) that
> also have nictitating membranes?
Yes. In the Sarcopterygii, owls.
(Sorry, Ken, but you set yourself up for that one.
I do want to say that I value your attention to these features, and I'd
be interested in your take on the presence/absence of eccrine glands on
most body surfaces of mammals. Dogs have eccrine glands more or less
restricted to the feet, iirc, but humans and horses have them over the
entire body surface.)
Curtis Clark http://www.csupomona.edu/~jcclark/
Director, I&IT Web Development +1 909 979 6371
University Web Coordinator, Cal Poly Pomona
More information about the Taxacom