👉 Morlockiidae is a group of extinct arthropod dinosaurs that lived during the Cretaceous period, about 68 million years ago. These prehistoric creatures were characterized by their highly elongated legs and short tails, which allowed them to walk on the ground without hopping or rolling. They are often referred to as "cruel" due to their aggressive behavior and ability to hunt large prey. Morlockiidae evolved from a group of smaller, more specialized arthrop
