Question

Which set of evolutionary traits is present in all extinct members of the clade Dinosauria?

c- Diapsid skulls, amnion bound embryos, tetrapod morphology, notochord, ornithodiran vertebrae

a. Diapsid skulls, retained pharyngeal gill slits, tetrapod morphology, notochord, ornithodiran vertebrae

b. Synapsid skulls, amnion bound embryos, tetrapod morphology, notochord, ornithodiran vertebrae

d. Diapsid skulls, salt gland fenestra, obligate quadrupedal morphology, notochord, ornithodiran vertebrae

Answer 1

C) diopside skull amino bound embryos tetrapod morphology notochord, ornithodiran vertebrae .

Tetrapod are four limbs , which include instant amphibians reptiles including dinosaurs and therefore birds.similar is with amino embryos found in dinosaurs egg fossils. Dinosaurs for with in vertebrate backbone bearing animals within the large group bearing nerve cord and notochord.with invertebrates dinosaurs are tetrapod or animals with four limbs dinosaurs amniotic tetrapods which means that like us as they possess and amino.

A) Diapsid skull retained pharyngeal gill slits tetrapod morphology notochord , ornithodiran vertebrae are all present in in sea animals and the Fossil reveal these parts are even present in dinosaurs.

B)Synapsids aur a class of animals that includes mammals and everything more closely related to mammals than to reptiles and birds they have single skull opening call the temporal fenestra behind each eye. And on the other hand Diapsids are a group of reptiles that developed two holes on each side of their skills. Living depstar include crocodiles lizards snake. In the past the most common division of of aminotes has been into the classes mammal reptile and aves. Birds are directly descended however from dinosaurs so this classical scheme results in a group that is not true clades. Thus birds are considered as a group distinct from reptiles for the purpose that this does not completely reflect phylogenetic history and relationship. Instead modern phylogenetic place birds and reptile into a larger clade together le 2 birds are the true descendant of dinosaurs.

D) nasal salt glands are also present in some lizard species and marine animals which is a clear example of dinosaur lineage.