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What else can I help you with?
Are the chicken and the t-rex related?
Yes, they share a common ancestor. The group that contains the chicken, the T. rex, their common ancestor, and all the species that descended from that ancestor is called Coelurosauria.
Was pterodactyl ancestor of birds?
No. Pterosaurs share a common ancestor with the dinosaurs, but are not classed as dinosaurs themselves. Birds, however, descend from a group of dinosaurs called theropods; the earliest bird know, Archaeopteryx, dates to about 150 million years ago. The theropods also include dinosaurs such as T. rex, velociraptors, and other bird-like dinosaurs.
What type of animal was the common ancestor of mammals and birds?
The common ancestor of mammals and birds was a reptile.
How do you know that dinosaurs lived?
Because we have their fossils (solidified remains), and even fossilised eggs. And because of the fossils, then we have proof of their descendants, birds or they came from a common ancestor.
Most scientists now believe that birds evolved directly from bipedal?
Theropod dinosaurs, based on fossil and genetic evidence. Theropods share skeletal and anatomical features with birds, suggesting a common evolutionary ancestor. This hypothesis is supported by discoveries of transitional fossils, such as Archaeopteryx, that exhibit characteristics of both dinosaurs and birds.
Why is the dna of crocodiles is more similar to birds dna as compared to dna of turtles?
Simply put, birds are evolved from small dinosars, and dinosaurs belong to the same group that crocodiles belong to, archosauria, while turtles belong to the group sauropsida, because, while they appear to be more similar to crocodiles than birds, the evolutionary common ancestor they share is far more ancient, unlike that of crocodiles and dinosaurs. That's evolution for you.
What term is used to describe structures that come from a common ancestor?
A taxon of closely related species that share a recent common ancestor is a genus.
Which dinosaur is probaly the most recent common ancestor of velociraptor and archaeopteryx?
Velociraptor was a droameosaurid while Archaeopteryx was an Ave. Velociraptor lived in the cretaceous period and Archaeopteryx in the Jurassic period. They both might be ancestors to birds but i think their common ancestor must have been a medium sized droaemeosaurid.
Are birds the only animals that have feathers?
Yes, as in the only living animals, they are. However, feathered dinosaurs, the ancestor of birds, also had feathers.
Why do we think birds Evolved from crocodiles and alligators?
They didn't but they do share a common ancestor. Looking at fossils, scientists have determined that bird evolved from small carnivorous dinosaurs. Both dinosaurs and crocodiles stem from a group of reptiles called archosaurs.
Why would some scientists say a dinosaur maybe the ancestor of birds?
Comparative anatomy of certain species of dinosaurs, early birds, and modern birds show they are related.
What year did dinosaurs evolve from reptiles?
Evolution is generally a gradual process, such that it is generally difficult to classify transition species one way or the other. Would you say birds are reptiles? Birds are dinosaurs. Dinosaurs and reptiles share a common ancestor, probably dating to some time in the early Triassic. That would be around 250 million years ago.
