The snow trunksucking worm split from its ancestor. A small population of trunksucking worm from Barlowe Boreal followed the descendant of its food source, the orbion, into Barlowe Polar Scrub, and eventually all the way to Nergali Polar Beach. Usually, it was the shorter ones who were able to retain heat better and therefore survive. They also got fatter. However, jumping became a challenge due to this. Now they just crawl to the polar orbion and stick their jaws into them. Considering this, the bottom one atrophied, because it was shorter and usually didn't reach the orbion. The two on the side became needle like, while the one on top can scrape food from the source, in combo with its powerful acid.
Living Relatives (click to show/hide)
These are randomly selected, and organized from lowest to highest shared taxon. (This may correspond to similarity more than actual relation)
