Oxyrrhynchium

The  is a Tier 4 Tank that upgrades from Destroyer and Launcher at level 45.

Design
The overall looks very similar to the Oxyrrhexis, but scaled down. Its frontal barrel is about the same width as a Destroyer's, and its Heatseeker-like tip is also narrower to remain proportional. Its rear pink spike is presumed to be shorter or smaller but it is unknown,

Technical
Like the Oxyrrhexis, the fires missiles that resemble small Guardians. They home in on enemies and use their swarm barrel to not only attack them but also boost themselves with its recoil.

Trivia

 * is a genus of mosses.
 * Despite upgrading to the Oxyrrhexis, this tank was actually created long after it, and was also partially named after it.
 * Because of this influence, this branch has a recurring naming scheme of words beginning with "Oxy-".
 * The Oxygen, Resurrection and Isthmus are considered a group since they are all function tanks (a developer term meaning they can be easily made from existing tanks using functions), and all of their names start with the syllables of Oxyrrhexis.