Changes

'''Tethris''' was an [[Imperium|Imperial]] world, subjected to [[Exterminatus]] after being overrun by the [[Tyranid]]s.

 Tethris was successfully conquered by an unpsecified unspecified [[Tyranid]] hive fleet. However, while the Tyranids were still harvesting the planet's bio-reserves, a [[Space Marine ]] fleet materialised from the [[Warp]] and destroyed the planet with a barrage of [[cyclonic torpedo]]es, fulfilling an [[Exterminatus]] order issued by Inquisitor [[Kryptman]].{{Fn|1}}

*{{Endn|1}}: [[Codex: Tyranids (3rd Edition)]], pppgs. 42–43