Gystens
Gystens is a fictional creature appearing in the speculative evolution project "Xenotheria" created by artist and writer Mark Witton. Within the context of this project, Gystens are depicted as large, herbivorous mammals adapted to a semi-aquatic lifestyle in the wetlands and coastal regions of a future Earth. They are characterized by their broad, paddle-like feet, thick skin, and a specialized digestive system capable of processing tough plant matter.
The evolutionary lineage of Gystens is theorized to stem from a group of terrestrial mammals that gradually