Best Preserved Dinosaur Remains

‘Leonardo’, the fossilized remains of a 77 – million – year – old duck billed dinosaur, was discovered in northern Montana, USA, in the summer of 2000. The 7 – m – long (23 –ft) Brachylophosaurus is the fourth dinosaur ever discovered to be classified as a mummy. Around 90% of its body is covered in fossilized soft tissue, including skin, muscles, scales, footpads, and even its last meal has been preserved in its stomach. The creature was between three and four years old when it died.

Dinosaur with most Teeth

The dinosaur with the most teeth was the duck – billed hadrosaur (left), which, despite being a herbivore with a toothless beak, had up to 960 self – sharpening cheek teeth in the side of its strong jaws for chewing tough plants.

Largest Dinosaur Eggs

The largest known dinosaur eggs are those of Hypseloasaurus priscus (‘high ridge lizard’, right), a 12 –m – long (40 –ft) titanosaurid which lived about 80 million years ago. Examples found in the Durance valley in France in October 1961 would have been, uncrushed, 30 cm (12 in) long – about the height of this page – and a diameter of 255 mm (10 in).

Tallest Dinosaur

Dinosaur found in the year of 1994 that remain in Oklahoma, USA; belong to what is believed to be the largest creature to have ever walked the earth. The Sauroposeidon stood at 18 m(60 ft) tall and weighed 60 tones(132,000 lbs). Its neck is about a third longer than that of the Brachiosaurus, its nearest competitor. It lived about 110 million years ago, during the mid- cretaceous period.

Largest Ever Carnivore

In the year of 1995, was discovered the largest skeleton of the predatory dinosaur in Neuquen, Patagonia, Argentina. The (above) of the new dinosaur, Giganotasourus carolinii, was 12.5 m(40 ft) long, and weighed 8 tones (17,000 lb). The bones suggest that it was both taller and more heavily built than Tyrannosaurus rex. It lived about 110 million years ago so is 30 million years older than T. rex.

Earliest Animal to Walk on Land

The earliest animal to walk on land was Pererpes finneyae, which lived around 350 million years ago. This tetrapod was discovered in 1971 north of Dumbarton, UK. The identification of the legs and one complete foot was announced on 4 July 2002. The identification was made by Jenny Clack (UK), from the University Museum of zoology, University of Cambridge, UK.