How do anthropologists define being human (versus other animals)?
Here’s all the biological stuff: We have a broad, flared ilium whereas many other animals have a long straight ilium. Our foramen magnum is located in an anterior position pointing pretty much straight down. We have incisiform canines with no diastema and no sectorial premolar. We are the ONLY species on earth with a parabolic dental arch (rather than “V” or “U” shaped). We have foreheads (due to brain size) and bony chins (scientists aren’t sure about the purpose of them). We have S-curved spines, an eleven degree carrying angle, and a small arm/leg ratio of 73% (compared to a quadruped at around 100% or a brachiating ape at around 110%). All of these physical characteristics are absolutely unique to humans.
