Like Having 4 Limbs? Thank Your Belly
Monday, January 27, 2014 - 17:50
in Paleontology & Archaeology
Backboned animals, at least the ones with jaws, have four fins or limbs, one pair in front and one pair behind. Thanks to that random prankster known as evolution, these have been modified into a marvelous variety of fins, legs, arms, flippers, and wings. But how did our earliest ancestors settle into such a consistent arrangement of two pairs of appendages? It's because we have a belly say theoretical biologists (yes, that's a real thing) at the University of Vienna and the Konrad Lorenz Institute for Evolution and Cognition Research. read more