From: Star Trek: Enterprise

Caption: A skull from the extinct Avian branch of the Xindi race.

Star Trek: Enterprise

Episode: ENT 059 - Shipment

The sixth of multiple sentient Xindi species were completely wiped out when Xindus was imploded, due to their airborne nature. The planet's destruction was the last act in a century-old civil war among the species some 120 years before their contact with humans.

Continue Reading Below