What did the habitat of the dinosaurs look like?

What did the habitat of the dinosaurs look like?

The short answer to your question is: "Dinosaurs have lived all over the planet in all kinds of habitats"

They've been around for 230 million years and have adapted to a vast number of environments. Even if we disregard birds (some of whom thrive in the middle of the Atlantic Ocean, under water, or in the snow of Antarctica) and look at just the 'classic' extinct dinosaurs, the variety of habitats is still pretty impressive.

Some dinosaurs lived at the Equator, others lived far to the north or the south. Some lived in dense rain forests, some at the shores of rivers or lakes, some lived in open plains, some lived by the seashore, some lived in sandy desserts, some lived on small islands, some lived in the trees, and some dug small tunnels in the ground like foxes.
Some dinosaurs probably lived in the mountains, but we'll never know since mountain dwelling creatures don't fossilize.
And on top of that, it seems that some dinosaurs migrated every spring and fall, just like many types of birds do today. So they wandered between different habitats.

Is there a specific kind of dinosaur, whose habitat you would like to know about?

What did the habitat of Velociraptor look like? I know it was in Mongolia, and I know Mongolia is a desert now, but was it a desert 80 million years ago when Velociraptor was around?

Sandy desserts. Kinda like today’s Mongolia, only with rivers, trees and shrubbery.
http://www.linesandcolors.com/images/2006-01/ sibbick2_450.jpg

Many beautifully preserved fossils from that area are thought to have come about by wet sand dunes collapsing and burying the dinosaurs.
The famous "fighting dinosaurs" fossil for instance, where a Velociraptor and a Protoceratops have died while engaged in a furious battle:
http://blog.webosaurs.com/wp-content/uploads/2009/08/ velociraptor1giant.jpg

Thanks! What habitat did Allosaurus live in? I know it lived in what are now badlands in Wyoming, but what did it look like 145 million years ago?

Allosaurus is mainly found in Jurassic layers from the western USA known as 'the Morrison formation'

In 2001 Paul E. Olsen, palaeontologist working with jurassic ecosystems, had the following to say about the environment of the Morrison:

Most workers on the Morrison believe the climate was at least seasonally dry. If we were to pick a modern environment with a similar climate, it might be in Kenya in the Serengeti Plain. This area is said be a Savanna, and it has often been said that the Morrison Formation had a Savanna-type climate. However, a Savanna is defined as being a vegetation type consisting of scattered trees with a ground cover of grasses or shrubs, with the trees covering less than 40% of the ground. ... However, during the Jurassic, there were no grasses, and there were no trees belonging to the flowering plants (angiosperms).

What we know of Morrison vegetation itself, which is not much, is that it was dominated by conifer trees of the Cheirolepidiaceous kind (as earlier in the Jurassic) along with trees related to the modern Gingko, ferns, and horsetail rushes.

http://rainbow.ldgo.columbia.edu/courses/v1001/ morisson14.html


So, a savannah-like landscape with ferns covering the ground instead of grass. I believe 'Walking With Dinosaurs' envisioned the environment pretty well in the 2nd episode "Time of the Titans":
http://thomas.thomlex.com/dinosaurs/brachiosaurus.jpg
http://img.thesun.co.uk/multimedia/archive/00809/ ContactSheet-0055-6_809774a.jpg