Definitions by Robin Sherbotsky

Extanct 

Extacnt is the past tense for extinct

The dinosaurs got Extanct

Extanct by Robin Sherbotsky January 5, 2011

Extanction 

Extanction is the past tense of extinction

A long time ago, the dinosaurs went into extanction

Extanction by Robin Sherbotsky January 5, 2011