Prehistoric Dinosaurs

Amber, or fossil tree sap, can contain perfectly preserved prehistoric plants, insects and animals many millions of years old. These tiny tinted windows to an ancient past have shown us some surprising things, including finely detailed animals as large and complex as crustaceans, frogs and lizards.

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We are in the midst of the Discovery Channel's annual celebration known as Shark Week. In honor of the occasion, here's a look at the strangest species of sharks, both living and extinct. 1. Sawshark (Image credit: Flickr user Gore Fiendus/Jerry Frausto) There are seven known species of sawsharks (Pristiophoriformes) that have long snouts with teeth, but they are not related to sawfish (although sawsharks are fish). They swim along the floor of the ocean and use their snouts exactly as you…

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LIOPLEURODON was the biggest plesiosaur. Liopleurodon was not a dinosaur, but a short-necked plesiosaur (a pliosaur), an extinct, swimming reptile. It lived during the late Jurassic period in Europe and Eastern Europe. It was a carnivore which ate fish,ichthyosaurs, and other plesiosaurs. 39 to 49 feet (12-15 m) long. It had a long body with a large head, a short neck, powerful jaws and teeth, and four long, wide, paddle-like flippers. The skull was 10 feet (3 m) long.

CORVALLIS, Ore. - Scientists at Oregon State University have produced one of the most detailed and accurate ecological descriptions ever made of a prehistoric rain forest, based on the study of insects, plants, seeds and other material - almost all of which is now extinct - found trapped in amber about 20 million years ago. This and other work relating to one of nature's most fascinating rocks will be explored on Tuesday, Feb.

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Here's a list of 10 dinosaurs that, in their own way, are every bit as important as the attention-grabbing T. Rex, Triceratops, and Stegosaurus.

By far the largest ever found of its kind, the spiny fossil predator "would have made enough scampi to feed an army," one expert quipped.

Yutyrannus (meaning "feathered tyrant") is a genus of tyrannosauroid dinosaurs. It contains a single species, Yutyrannus huali, known from three nearly ... Yutyrannus_huali

Often touted as the smartest dinosaur that ever lived, Troodon is one of the more interesting meat-eaters in the dinosaur bestiary.

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