Science ❯ Evolution

Mammalian Evolution

Developmental Biology Late Cretaceous Cetacean Evolution Reproductive Biology Carnivorous Mammals Arctic Mammals

First Confirmed Egg From a Mammal Ancestor Found in 250-Million-Year-Old Fossil

Non-destructive X-ray scans of a South African fossil reveal an in-egg Lystrosaurus embryo, sharpening hypotheses about mammal reproductive origins.

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Hornless ‘Arctic Rhino’ Identified in Canada’s High Arctic Challenges Long-Held Dispersal Timeline