Kritosarus

Picture by : http://www.raul-martin.net/raulmartin/uno/kritosaurus.htm

Kritosaurus

by : http://www.typesofdinosaurs.com/kritosaurus

- Other Names: Gryposaurus (not confirmed)
- Pronunciation: CRY-tuh-SAWR-us
- Translation: Noble Lizard
- Order: Ornithischia
- Suborder: Ornithopoda
- Infraorder: Iguanodontia
- Family: Hadrosauridae
- Height: 23 feet (7 meters)
- Weight: 5,950 pounds (2,700 kg)
- Length: 30 feet (9.1 meters)
- Period: Late Cretaceous
- Description: Herbivore, Bipedal
- Notes: Kritosaurus was found in New Mexico by Barnum Brown,the great American Museum of Natural History collector. Thisduckbill dinosaur had a wide, flat skull and a ridge of bone justbelow its eyes. This would have given its mouth and snout theappearance of a "Roman Nose," hence its name "Noble Lizard."There is considerable evidence that Kritosaurus and Gryposaurusare the same species but there appear to be differences in theirtooth structure.

Saber Tooth Tigers

By Brady

(http://library.thinkquest.org/TQ0312706/sabertoothtigers.htm)

Saber tooth tigers lived many, many years ago back when the earth was trapped in an Ice Age. At that time, woolly mammoths and mastodons roamed the icy land. Smilodons, which were a type of saber tooth tiger, were a tiny bit smaller than the panthers that live today. However, smilodons were heavier than panthers, weighing a whopping 440 lbs. The smilodons were the biggest kind of saber tooth. Saber tooths were very fierce predators. The saber tooth tiger was about the size of the African lion. Some saber tooth tigers grew up to 15 feet in length!

Stygimoloch

Stygimoloch is an interesting dinosaur for a number of reasons. Although it lived in the late Cretaceous, it had a number of primitive characteristics. It had five fingers, it had teeth similar to Stegosaurus in the back of its mouth, but the front was filled with sharp incisors similar to a carnivore. All of the remains that had been previously found were misidentified as those from a Pachycephalosaurus. In fact, even Triebold's specimen was initially misidentified as Pachycephalosaurus.

Description and picture by :
http://www.dinosaur-world.com/weird_dinosaurs/stygimoloch_spinifer.htm

The Woolly Mammoth

Description and picture by :

http://en.wikipedia.org/wiki/Woolly_mammoth

The woolly mammoth (Mammuthus primigenius), also called the tundra mammoth, is an extinct species of mammoth. This animal is known from bones and frozen carcasses from northern North America and northern Eurasia with the best preserved carcasses in Siberia.

This mammoth species was first recorded in (possibly 150,000 years old) deposits of the second last glaciation in Eurasia. They were derived from steppe mammoths (Mammuthus trogontherii).

It disappeared from most of its range at the end of the Pleistocene (10,000 years ago), with a dwarfed race still living on Wrangel Island until roughly 1700 BCE.

Maiasaura

http://www.cartage.org.lb/en/themes/sciences/Paleontology/Paleozoology/Mesozoic/1maia6.jpg


Maiasaura Description :
(http://en.wikipedia.org/wiki/Maiasaura)

Maiasaura was large, attaining an adult length of about 9 meters (30 feet) and had the typical hadrosaurid flat beak and a thick nose. It had a small, spiky crest in front of its eyes. The crest may have been used in headbutting contests between males during the breeding season.

This dinosaur was herbivorous. It walked both on two (bipedal) or four (quadrupedal) legs and appeared to have no defense against predators, except, perhaps, its heavy muscular tail and its herd behaviour. These herds were extremely large and could have comprised as many as 10,000 individuals.