the.com/arthropod
Nature's most successful franchise: skeleton on the outside, legs in suspiciously segmented installments.
means An invertebrate animal with a hard exoskeleton, a segmented body, and jointed limbs — insects, spiders, crabs, and their kin.
from From Greek arthron, joint, plus pous, foot — literally jointed-foot, named for the hinged legs that bend where yours do not.
PopulationRoughly 80 percent of all known animal species.
Growth quirkMust molt their armor to get bigger.
Old guardTrilobites ruled oceans for 270 million years.