Exploring Prehistoric Life
Ammonoids are a group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda.
Ichthyosaurs belong to the order known as Ichthyosauria or Ichthyopterygia (‘fish flippers’ – a designation introduced by Sir Richard Owen in 1840, although the term is now used more for the parent clade of the Ichthyosauria)....
Tylosaurus was a mosasaur, a large, predatory marine lizard closely related to modern monitor lizards and to snakes.
Hatzegopteryx is a genus of azhdarchid pterosaur found in the late Maastrichtian deposits of the Densuș Ciula Formation, outcropping in Transylvania, Romania.
The hunt for the ancestors of living birds began with a specimen of Archaeopteryx, the first known bird, discovered in the early 1860s.
Quetzalcoatlus northropi is an azhdarchid pterosaur known from the Late Cretaceous of North America (Maastrichtian stage) and one of...
The word “tetrapod” means “four feet” and includes all species alive today that have four feet — but this group also includes many animals that don’t have four feet.
Dinosaurs were in decline for tens of millions of years before the Earth was struck by an asteroid, ending their dominion over the planet. What was killing off dinosaurs near the end of their reign?
Sometimes synapsids are called “mammal-like reptiles;” however, that is misleading because synapsids are not reptiles.