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Vertebrate
Vertebrates are members of the subphylum Vertebrata (within the phylum Chordata), specifically, those chordates with backbones or spinal columns. About 57,739 species of vertebrates have been ... > more -
Marine conservation
Marine conservation, also known as marine resources conservation, is the protection and preservation of ecosystems in oceans and seas. Marine conservation focusses on limiting human-caused damage to ... > more -
Stegosaurus
Stegosaurus, meaning "plated lizard", because of the plates on its back was a genus of large herbivorous dinosaurs from the Upper Jurassic of North America. It is among the most easily identifiable ... > more -
Woodpecker
Woodpeckers are found worldwide and include numerous species, usually numbered at 218 (including the Ivory-billed). Woodpeckers gained their English name because of the habit of some species of ... > more -
Hadrosaurus
Hadrosaurus is a hadrosaurid dinosaur genus. In 1858, a skeleton of a dinosaur from this genus was the first full dinosaur skeleton found in North America, and in 1868 it became the first ever ... > more -
Cretaceous-Tertiary extinction event
The Cretaceous-Tertiary extinction event was a period of massive extinction of species, about 65.5 million years ago. It corresponds to the end of the Cretaceous Period and the beginning of the ... > more
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