An evolutionary website recently published “a groundbreaking study” that supposedly identifies a basic, uncomplicated, “simple” creature as the ancient ancestor of all bilaterians (creatures with just one plane in which they can be separated into two equal halves), and this organism supposedly existed 700 million years ago.¹

A recent study of dinosaur sizes claims to break Bergmann’s rule.¹ Bergmann’s rule was named after biologist Carl Bergmann, who in 1847 noticed that warm-blooded animals tended to be larger in cold climates compared to the same animal in a warm climate. Larger body mass tends to help an animal retain more heat, helping animals survive in the cold.

The fossil record contains a plethora of shark teeth, but fossilized shark skeletons are exceptionally rare. When they are found, though, they are always 100% sharks.^1,2