2007-02-21 17:17:35 · 5 answers · asked by Jamal 1 in Science & Mathematics ➔ Botany
The following features are absent in Dinosaurs and present only in birds
1) Body covered with feathers.
2) Presence of beak and no teeth.
3) Forelimbs are completely modified in to wings and no claws on the those limbs.
4) Warm blooded.
So they are placed in class AVES of vertebrate animals
And Dinosaurs and their relatives are in class REPTILIA of vertebrate animals.
This is , I think sufficient for you.
2007-02-24 21:12:18 · answer #1 · answered by Anonymous · 0⤊ 0⤋
do you mean the characteristics that birds have but dinos don't? like the 180 degree backwards rotated toe?
2007-02-23 06:37:33 · answer #2 · answered by anna 3 · 1⤊ 0⤋
See this site:
http://www.ucmp.berkeley.edu/diapsids/avians.html
Then scroll down to "Objections to the theory ..."
Hope this helps.
2007-02-22 21:37:59 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Prehistoric!!!!
2007-02-21 17:22:34 · answer #4 · answered by sunnygirl 3 · 0⤊ 0⤋
something like arhiopterix
2007-02-21 17:25:45 · answer #5 · answered by Theta40 7 · 0⤊ 0⤋