Dinosaurs were one of several kinds of
prehistoric reptiles that lived during the
Mesozoic Era,
often known informally as the "Age of Reptiles".
(the scientific
definition of a dinosaur
is based on unique features found only in their skeletons, and not in other reptiles).
There were many different kinds
("species") of dinosaurs,
which varied in size from about the size of a chicken to over 100
feet long.
Different types of dinosaurs
had different diets:
Some dinosaurs were meat-eaters ("carnivores"),
but others ate plants ("herbivores").
Some dinosaurs walked on four legs, and some walked on two.
Some dinosaurs had armor and horns, and some even had primitive feathers.
Dinosaurs dominated the earth for over 165 million years, but all
died out
("became extinct")
at the end of the Cretaceous period,
65 million years ago.
Nobody is certain why they went extinct - but most scientists now believe it was caused by an asteroid
hitting the earth and the subsequent environmental changes.
Nobody knows for sure what a dinosaur sounded like,
or even what color they were.
Dinosaurs may live on today!
Some dinosaurs were very bird-like, and it is likely that they may have been
ancestors of today's birds.
So, please explore this web site to learn about different types of dinosaurs,
and to find out about various fun activities related to these giant reptiles!
Linking to This Page
Although this site is run on a commercial basis,
we do hope it will be useful and interesting for students and teachers.
We welcome people linking to this website, or citing us in their school and educational projects
(remember in school projects and papers, you should always cite your sources).
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC. THIS CONTENT IS PROVIDED 'AS IS' AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
Disclosure:
Our company's websites' content (including this website's content) includes advertisements for
our own company's websites, products, and services,
and for other organization's websites, products, and services.
In the case of links to other organization's websites,
our company may receive a payment, (1) if you purchase products or services,
or (2) if you sign-up for third party offers, after following links from this website.
Unless specifically otherwise stated, information about other organization's products and services,
is based on information provided by that organization,
the product/service vendor, and/or publicly available information - and should
not be taken to mean that we have used the product/service in question.
Additionally, our company's websites contain some adverts which we are paid
to display, but whose content is not selected by us, such as Google AdSense ads. For more
detailed information, please see Advertising/Endorsements Disclosures
