But this group didn’t evolve from a single common ancestor, many animals simply converged on the same lifestyle and body plan.
Creatures that occupy the same evolutionary niche can be similar in all sorts of ways. If evolution keeps reinventing the same few tricks, it can be a highly useful categorization. See “tree”.
Creatures that occupy the same evolutionary niche can be similar in all sorts of ways. If evolution keeps reinventing the same few tricks, it can be a highly useful categorization. See “tree”.