3 According to the most recent phylogenetic studies, Birds are…Please explain a) ornithischian dinosaurs b) saurischian...
3 According to the most recent phylogenetic studies, Birds are…Please explain
a) ornithischian dinosaurs
b) saurischian dinosaurs
c) neither a nor b.
Homework Answers
3.(b)
Aves (avian dinosaurs) are direct descendants of one group of theropod dinosaur , are a sub clade of saurischian dinosaurs in phylogenetic classification .
Ornithischian dinosaurs ( bird hipped )
Saurischian dinosaurs ( lizard hipped ) .
Some saurischians have bird like hips and Ornithischian hips are somewhat bird like due to convergent evolution , not due to shared ancestry . Birds are apparently descended from saurischian have a reversed pubis like Ornithischian do . So, it is just probably due to convergence and these two names are just confusing .
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