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Confusingly, the ornithischian, or bird-hipped, dinosaurs were NOT the ancestors of birds. Birds evolved from a group of saurischian (lizard-hipped) dinosaurs called theropods. Back to page index Types Of Dinosaurs: Saurischians In this section, we’re going to look at some well-known type...
Dinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years. Most died out by the end of the Cretaceous Period. Many lines of evidence show
Titanosaurs: 8 of the World's Biggest Dinosaurs Solitary beeA blue-banded bee (Amegillaspecies) flying near a flower in Tamil Nadu, India. bee insect Print Also known as: Apoidea Written and fact-checked by The Editors of Encyclopaedia Britannica ...
While dinosaurs were the largest or most notable group of reptiles living during the Mesozoic era, they were not the only reptiles. Contemporary to dinosaurs were crocodilians, reptiles resembling the crocodiles and alligators of today, and the flying reptiles known as pterosaurs. Neither example is...
The family of dromaeosaurids is a collection of feathered dinosaurs that have some large sickle-like toe on each foot. It was estimated that members of the Dromaeuosauridae began to appear during the Cretaceous period, and all of them were extinct by the end of this semester....
The welwitschia is the only surviving member of its family (the rest having died out with the dinosaurs) and is seemingly alive out of spite. Welwitschia is not only bizarre-looking, but it also survives perfectly fine with practically no water. Though this plant thrives in isolation – ...
Epidexipteryx Epidexipteryx was one of the smallest non-avian dinosaurs to ever exist. Ermine A very bold and ferocious predator! Eurasian Beaver Eats 20% of its weight daily! Eurasian Bullfinch The shy eurasian bullfinch prefers to forage very close to cover. Eurasian Eagle-owl The Eurasian...
Rhyolite Caldera Complex- these are the most explosive volcanoes. They do not look like common volcanoes -- after an eruption, the result is a caldera (crater) caused when the area around the vent collapses. Examples are Yellowstone inWyoming, USA and Lake Taupo in New Zealand (which erupted...
The frilled shark has distinctive ‘frilled’ gill slits and a long, eel-like body, making it a bizarre-looking shark. Because of its primitive features, this shark is considered a ‘living fossil because millions of years ago, even before the dinosaurs, there was a species similar to the ...