1 definition by The Opabinia
Opabinia regalis lived 500 million years ago during the Cambrian Period. It had 5 eyes, a proboscis, and a backwards mouth. It was about 2-3 inches long, and it ate plankton by catching it's proboscis, the feeding it up to it's mouth! The opabinia was also the awesomest creature alive!
Opabinias are very awesome!!
by The Opabinia June 5, 2016