A new dinosaur that wears its ‘heart’ on its tail provides new clues to how ecosystems evolved on the African continent during the Cretaceous period.
The microbes that metabolized practically anything back then just to stay alive didn’t appear to want to do much else. Yes, it’s an old question why they didn’t (couldn’t?) Or maybe they even did. But based on the history of the last half-billion years, there should be an answer.
Comparative genome content analyses provide insight into the early evolution of animals. A novel method that permits the use of larger datasets in such studies yields results that are consistent with classical views of animal phylogeny.