The Cretaceous-Tertiary Extinction
The Cretaceous-Tertiary extinction occurred about 66 million years ago. During this extinction, pterosaurs, ammonites, marine species, and rudist bivalves went extinct. Many mammals and modern birds radiated afterwards.
The Triassic-Jurassic extinction took place about 200 million years ago. During this extinction, many anphibians and conodonts, ammonoids, bivalves, all marine reptiles, and many dinosaur groups were affected and died off. Other dinosaur groups, plesiosaurs, bivalves, and teleost fish radiated afterwards.
The End Permian-Triassic extinction, which is also known as the Great Dying, occurred about 252 million years ago, and was the greatest mass extinction in Earth’s recorded history. The cause of this extinction is currently
The Triassic-Jurassic extinction took place about 200 million years ago. During this extinction, many anphibians and conodonts, ammonoids, bivalves, all marine reptiles, and many dinosaur groups were affected and died off. Other dinosaur groups, plesiosaurs, bivalves, and teleost fish radiated afterwards.
The End Permian-Triassic extinction, which is also known as the Great Dying, occurred about 252 million years ago, and was the greatest mass extinction in Earth’s recorded history. The cause of this extinction is currently