Thought of as the "Cows, deer, bison, wild horses, antelope, and sheep of the Mesozoic" because of the wide range of niches and locations they filled with similar body plans.
A group of anatomical characteristics shared by several species of an animal phylum is known as a body plan, ground plan, or Bauplan. Invertebrates have numerous body plans, but vertebrates only have one.
This phrase, which is typically used in reference to animals, suggests a "blueprint" that includes elements like symmetry, layers, segmentation, nerve, limb, and gut disposition. The goal of evolutionary developmental biology is to explain how different body plans evolved.
As per Body Plans The Cambrian explosion and a more complex knowledge of animal evolution imply that body plans gradually changed throughout the early Paleozoic.
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