Early mammals weren’t all loners—some may have lived in pairs alongside the dinosaurs

September 3, 2026 · 8:00 pm 1 sources

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• Early mammals weren't all loners—some may have lived in pairs alongside the dinosaurs
  Phys.org · September 3, 2026 20:00
  About 200 million years ago, furry, little egg-laying creatures evolved the ability to feed their offspring with a secretion from special glands: milk. Their evolutionary journey continued, and by about 160 million years ago, the first mammals with a real placenta had come into being. Instead of…