👉 The term "enterozoan" refers to a group of animals that are characterized by having four limbs, a head with two eyes and a pair of ears, and an elongated body. These animals were found in the Mesozoic era, which lasted from about 65 million years ago to about 25 million years ago.
The enterozoan group includes many different families and genera, including:
1.
Arthropoda
: This is a group of insects that are