Published in Sauropod Vertebra Picture of the Week
Author Matt Wedel
![](https://svpow.com/wp-content/uploads/2024/05/apatosaur-cervicals-compared.jpg?w=480)
1. VARIATION An anatomical variant that shows up in 1 in 500 or 1 in 1000 humans is by medical standards pretty common; in a metro area the size of London or Los Angeles you’d expect to find 10,000 or 20,000 people with that variation.