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Paleontology

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beetle fossils

BAD HOUSEGUESTS  Some ancient beetles survived by freeloading off social insects such as termites. Two new beetle fossils (Cretotrichopsenius burmiticus, left and Mesosymbion compactus, right) suggest that the behavior, known as social parasitism, has endured for about 100 million years.

Teleocrater rhadinus

REPTILE REIMAGINED  Unlike other known close dinosaur relatives, Teleocrater rhadinus (illustrated) walked on four feet instead of two and had an ankle bone like a crocodile’s.

remains of bedbug relative

CAVE CRITTERS Scientists found ancient remains of three different bedbug species in an Oregon cave, including this 5,100-year-old female Cimex antennatus. The scale bar represents 1 millimeter.

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