How long ago was the Devonian period? What is a temporal scale in coastal geomorphology? What is one major effect of Earth's geologic plates? What happened during the Devonian period? What were the major geologic events of the Quaternary period?
Were mammals extinct in the Cretaceous Period? What was life like after the late Devonian extinction? What animals went extinct in the Mesozoic era? What became extinct in the Cretaceous period? Did the Triassic extinction kill all the dinosaurs?
Teaching was the first profession opened to women, soon after 1800. But even that was not easy for women to take because most high schools and colleges were open only to men. Oberlin College in Ohio was the first college in America to take in women. Nursing was regarded as a respectable...
An orthoceras isan ancient molluskthat lived in the Ordovician period. At that time, the earth was mostly covered in water. It had a soft squid-like body inside a cone shell. Over time, its aragonite shell turned into calcite and fossilized. Let's explore more fun facts about this fascina...
By the end of the Triassic period roughly 201 million years ago, both dinosaurs and mammals had evolved excellent running abilities. Humans refined these locomotor powers,evolving numerous adaptationsthat make us one of the most efficient and capable running species on the planet. ...
How big was the meteor that killed the dinosaurs? Thesix mile-wideasteroid which struck the Earth 66 million years ago and ended the 180 million year-long reign of the dinosaurs, was the cause of what is known as a Chicxulub events. ...
There had been a rupture, deep in amniote history. In the mammals—the last surviving therapsids, Triassic throwbacks still gamely hanging on in the dinosaurs’ shadow— ventilation was a matter of breathing in and breathing out again. Considered objectively, this is an inefficient way to get ...
Oddly enough, the key dramatic question driving the action in all of these films – how to kill a dinosaur – has become a very lively topic of argument among scientists in the last few months. There was a day – last year, say – when we thought we knew how all the dinosaurs died....
How long can hippos live? How long do howler monkeys live? How many years did the Triassic Period last? How long was the longest dinosaur? How many years does a gorilla live? How long does a Ulysses butterfly live? What is the average lifespan of an ant?
How was the Cretaceous Period different from the Jurassic Period? How do marsupials give birth? What dinosaurs lived in the Mesozoic era? What are the different types of dinosaurs? How big were dinosaurs? What allowed dinosaurs to begin appearing during the Triassic Period?