the.com/tetrapod
the fin that decided walking looked easier than swimming.
means any vertebrate with four limbs (or descended from one), including you, birds, and anything that ever left a footprint on land.
from from greek tetra (four) plus pous (foot); coined for the fossil lineage that crawled out of devonian swamps around 375 million years ago, trading gills for lungs and fins for legs.
snakes countlimbless but tetrapods, legs lost not never had
whales toofour-limbed ancestry hiding under flippers and blubber
tiktaalikthe famous fish-with-wrists transitional fossil, found 2004
you're onetechnically, arms and legs are just fancy fins