Evolution of Large Flightless Birds

Looking at the current distribution of ratites (large flightless birds including ostriches, rheas, emus and cassowaries) and understanding t...

Zealandia

Zealandia is a long, relatively narrow fragment of continental crust that split from Antarctica early in the Cretaceous Period (about 120 mi...

Formation of the Indian Ocean

About 200 million years ago (MYA), the Tethys Sea split Pangea into Laurasia (the northern continents) and Gondwanaland (the southern contin...

The Tasmanian Bridge

During the Triassic Period, about 200 million years ago (MYA), the supercontinent of Pangea split into Laurasia (the northern Continents) an...

A Weddell's Winter

Should the cold, gray Midwestern winter begin to depress you, think of the Weddell seal. This large pinniped, the southernmost mammal on the...

From Flight to Flippers

Fossil evidence suggests that ancestral penguins first appeared along the coasts of Antarctica and New Zealand about 65 million years ago. I...