The amnion is one, It forms the sac that completely encloses the embryo/fetus and the fluid in which it is immersed. The chorion is the other. It develops into the umbilical cord and the placenta, by which the fetus gets all its nutrients a...
http://answers.yahoo.com/question/index?qid=20090730163...
I'm a little bit confused. I've been reading a few different papers on parareptiles and I am getting a conflicting picture from various group's cladistic analyzes. Some place mesosaurs as parareptiles. Others have been placing them as basal...
http://thedragonstales.blogspot.com/2010/02/query-were-...
It is thought that soon after the amniotes originated, they diversified very quickly, particularly structures in the skull are different. Reptiles are readily recognised by scaly skins, hard-shelled eggs and by certain skull features; a sin...
http://www.elp.manchester.ac.uk/pub_projects/2003/MNZO0...
The title 'largest reptile' is hard to award! The Komodo Dragon Varanus komodoensis is the largest lizard
http://www.lifesci.sussex.ac.uk/teaching/C1003/reptiles...
Because what distinguishes amniotes from other animals is a series of protective layers around the egg. Amphibians' eggs are not protected by those layers.
http://www.answerbag.com/q_view/1308061?ref=W_Ask&u...
No. Amniotes lay their eggs on land, frogs lay their eggs in water
http://wiki.answers.com/Q/Is_a_frog_an_amniote
Early in the pregnancy, the placenta produces amniotic fluid. Later on, about the fourth month or so, the baby's kidneys start to work, and then the amniotic fluid is made there. Although the kidneys ultimately are responsible for filtering...
http://www.drspock.com/article/0,1510,5113,00.html?r=re...