This animal is almost all head.
Tardigrades lack several Hox genes and the mid-body region; most of their body aligns with an arthropod’s head.Tardigrades: Evolution’s Head-First Body Plan
Shrunk from giants.
Evidence points to miniaturisation from lobopodian ancestors; fossils trace back about 500 million years to the Cambrian.Tardigrades: Evolution’s Head-First Body Plan
