BrachiosauridsHumerusLACMMuseumsStinkin' Appendicular ElementsEarth and related Environmental Sciences
Published in Sauropod Vertebra Picture of the Week
Author Matt Wedel
![](https://svpow.files.wordpress.com/2013/04/lacm-deinonychus-claw.jpg?w=480&h=360)
All I want to do in this post is make people aware that there is a difference between these two things, and occasionally that affects those of us who work in natural history. In one of his books or essays, Stephen Jay Gould made the point that in natural history we are usually not dealing with whether phenomena are possible or not, but rather trying to determine their frequency.