[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
SCUTES AND LOVTRUP
<<Scutes were suggested as a possible alternative to scales as the
I believe that crocodilian scutes were mentioned in the article
discussed. Of interest to everyone within this debate is Lovtrup (1977)
reported that turtles have the same type of scute as crocodilians and
squamates show the same type of scute as birds. Hmm...
Interestingly, the basic phylogeny that Hedges and Poling (1999) found
for reptiles is rather similiar to the phylogeny produced by Lovtrup in
1977 (_Phylogeny of the Vertebrates_; a fine book, though rather
heterdox, particulary in the section on the ancestry of vertebrates).
Lovtrup found that among amniotes, mammals are the most basal clade and
a (squamate (tuatara (turtle (crocodile+bird) sequence. This is
similiar to the tree produced by Hedges and Poling.
Get Your Private, Free Email at http://www.hotmail.com