Burgess Shale fossil site gives up oldest evidence of brood care

Researchers have discovered the oldest direct evidence of brood care, with the identification of eggs containing preserved embryos in fossils of the 508-million-year-old Waptia fieldensis. Recent analysis of specimens of the shrimp-like creature found in the renowned Canadian Burgess Shale fossil deposit more than a century ago, revealed clusters of egg-shaped objects located on the underside of a bivalved carapace alongside the anterior third of the body.
Paleontology News — ScienceDaily

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