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CT Scans Reveal First Evidence of Bees Nesting in Ancient Bones

CT scans identified mud-lined brood cells in owl-accumulated bones.

Overview

  • A peer-reviewed study published December 16, 2025 in Royal Society Open Science documents bee brood cells preserved within tooth sockets and vertebrae.
  • The trace fossils, named Osnidum almontei, include compacted-mud chambers with smooth linings and occasional ancient pollen grains.
  • Imaging shows repeated reuse of the same cavities, with up to six stacked chambers inside a single hutia tooth socket.
  • The material comes from Cueva de Mono on Hispaniola, where barn owl activity concentrated thousands of Late Quaternary fossils, including hutias and sloths.
  • No bee bodies were preserved, leaving the maker unassigned, and researchers plan further fieldwork to search for living analogues and additional examples.