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Do birds evolve from dinosaurs?

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mehnaj mim

on 2 June 2016

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Transcript of Do birds evolve from dinosaurs?

Willow the dinosaur fossil
Biology: evolution of birds from dinosaurs
BY: Mehnaj Mim, Mathew Sanchez, Tejay Bhakta, Diana Carpio

Do birds evolve from dinosaurs?
Similarities between birds and dinosaurs
Dinosaur eggs
Birds eggs
The theory of the common ancestor
Evolution is change in the heritable traits of biological populations over successive generations. Evolutionary processes give rise to diversity at every level of biological organization, including the levels of species, individual organisms, and molecules.
The kind of dinosaurs birds come from
is a group of Theropod dinosaurs that evolved during the Mesozoic Era.The relationship between birds and dinosaurs was first proposed in the nineteenth century after discovering the primitive bird Archeopteryx in Germany.
The Archeopteryx, the oldest known bird fossil considered by many to be the first bird, being of about 150 million years of age. Alive in the late Jurassic period. It had feathers, wings, and hollow bones like a bird, but teeth, a bony tail, and legs like a small coelurosaur dinosaur.

What kind of dinosaurs do birds come from?
There are a lot of similarities between the dinosaurs and birds. Many of the similarities are the bone structures of both animals. One of them a Tyrannosaurus Rex's foot and a bird's foot.
Source: www.smithsonianmag.com/science-nature/willow-the-dinosaur-loses-heart-93712793/?no-ist
Willow is a well preserved
Thescelosaurus which was
discovered in 1993 and had
a well preserved heart.
Scientist examined it and
saw that the heart was more like a bird than a reptile. It had an avian-
type heart and probably
had the metabolism as a
Similarities between Dinosaurs and Birds
Mehnaj Mim
Mehnaj Mim
By: Tejay Bhakta
Diana Carpio
Matthew Sanchez
By: Tejay Bhakta
Both dinosaurs and birds lay their eggs in nests. The birds evolved from theropod dinosaurs. However, dinosaurs did not want to evolve into birds. In fact, it's more obvious that its features that characterize birds evolved through a series of steps and served different functions along the way. An example is theropods related to Compsognathus probably had feathers.These short, hair-like feathers grew on their heads, necks, and bodies. They also had different color feathers as well.

Tejay Bhakta
This wealth of new fossils has settled the century-old controversy of the origin of birds. Today, we can safely declare that birds evolved from a group of dinosaurs known as maniraptoran theropods-generally small meat-eating dinosaurs that include Velociraptor of Jurassic Park fame.
In the 19th century, Thomas Huxley and Othniel Charles Marsh presented a theory that stated that dinosaurs do have descendants; birds.
Paleontologists’ only fossil link between birds and dinosaurs was archaeopteryx, a hybrid creature with feathered wings but with the teeth and long bony tail of a dinosaur.
“Archaeopteryx seemed to emerge fully fledged with the characteristics of modern birds,” said Michael Benton, a paleontologist at the University of Bristol in England.
As birds evolved from Theropod dinosaurs,
birds only got certain part of a dinosaur's body that were adapted to the environment. Many native species have become extinct because they have been killed, had their food eaten or lost their habitat due to introduced species. For example, to catch the prey Archeopteryx had legs, wings, jaw and their sharp teeth would have helped them so it can survive and adapt with the environment where in other sides those dinosaurs who died for not adapting the environment couldn't pass its trait and was extinct because the only one who is winner, who adapt with the environment and the one that can't adapt and extinct are the losers and can't pass their traits to next generation .

Thomas Huxley
Othniel Charles Marsh
M. M
www.livescience.com › Animals
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