👉 The term "Simiiformes" refers to a group of animals that are characterized by their similarity to both primates and apes, with a focus on their anatomical similarities in the brain and nervous system. These creatures have a similar brain structure and neural network, as well as the same heart and circulatory systems. They also share similar adaptations for flight, such as wings and tail feathers, which allow them to soar through the air like birds.