Researchers report that ancient viruses may be to thank for myelin -- and, by extension, our large, complex brains. The team found that a retrovirus-derived genetic element or 'retrotransposon' is ...

Pictured is a rock slab with the earliest evidence for deep-sea vertebrates. The fossil evidence consists of pits and trails produced by feeding fishes during Early Cretaceous times. The dish-like ...

Because we’re a member of the group, it’s easy to see vertebrates as the pinnacle of evolution, a group capable of producing bats, birds, and giant whales in addition to ourselves. But when they first ...

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