dispersal of angiosperms

Asteroid

Brain Functions

Hitting Asteroids

High levels of carbon dioxide

Cataract Blindness

Caterpillers

Stress

Increasing Entropy

fungi

Greenhouse Effect

Lack of Sexual Activity

Mass Flooding

Mental Disorders

Metabolic Disorder

Ozone

Supernova

Uranium

Dinosaur Extinction Theories
It is predicted that all dinosaurs became extinct around the date of 61 million years ago which is shortly past the Cretaceous Period. No one really knows for sure how exactly dinosaurs became extinct but there is much evidence showing a sudden stop as opposed to the dinosaurs slowly dying off. With this strange mystery comes many theories on the possible reasons to what happened to stop their species from existing in such a short amount of time. Click to the top links to read about the different theories. Some of these are not very realistic as many are just suggestions which are not backed up with little to no evidence. The theory on
the Chicxulub crater is pretty much what most scientists think caused end of prehistoric animals and dinosaurs.

Index
Extinct Profiles
Triassic Dinosaurs
Jurassic Dinosaurs
Cretaceous Dinosaurs
Pterosaurs
Marine Reptiles
Dinosaur Extinction