A Throng of Thoracostomes

Thoracostomes are the most diverse phylum of red plant derivatives. Though they rarely reach such impressive sizes as some of Earth's megafauna, thoracostomes dominate the land, ocean, and freshwater habitats of Ilion. These pen and ink drawings represent only a small sample of their diverisity. You can read more about them here:

Thoracostomes: Anatomy, Phylogeny, and Examples
Clawed Thraxes
Microthraxes
Tube-Footed Thraxes
Stack-Eyed Thraxes
Hexapede Thraxes