Exploring Prehistoric Life
The team concluded that the extinct Pikaia gracilens is the most primitive known member of the chordate family.
Paleontologists, scientists and other researchers have collected enough samples over the years to form some pretty solid theories about what kinds of creatures used to roam this earth.
The period, which spans from about 252 million years ago to about 66 million years ago, was also known as the age of reptiles or the age of dinosaurs.
Other factors were involved in dinosaurs’ extinction, but the resounding death knell was the impact of a 6-mile-wide...
The earliest creatures to crawl out of the water onto land may have concocted antacids out of their own bones, a clever innovation that would’ve let the animals breathe, researchers now find.
Trilobites are distant relatives of lobsters, spiders and insects that died off more than 250 million years ago, before the dinosaurs even came into existence.
The Cambrian Period is the first geological time period of the Paleozoic Era (the “time of ancient life”). This period lasted about 53 million years and marked a dramatic burst of evolutionary changes in life on Earth, known as the “...
The Paleozoic Era, which ran from about 542 million years ago to 251 million years ago, was a time of great change on Earth. The era began with the breakup of one supercontinent and the formation of another.
Synapsids are a group of animals that includes mammals and every animal more closely related to mammals than to other living amniotes.