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Paleontology

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 Gryposaurus monumentensis

PROTEIN BOOST  Hadrosaurs like Gryposaurus monumentensis (illustrated) may have supplemented their veggie diets with meaty treats, roughly 75-million-year-old fossilized poop reveals.

Polypterus

PRIMITIVE FISH  Polypterus (shown) is a living member of a large group of vertebrates called ray-finned fishes. New evidence suggests that ray-finned fishes arose about 360 million years ago, after a major extinction event, then their diversity exploded.

sea star tube feet

MULTI-PURPOSE FEET  Tiny tube feet extend from this sea star’s arm. Uncommonly well-preserved fossils of an ancient relative of this echinoderm show it also had an array of these tentacle-like appendages.

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