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Optical Techniques Reveal Clues about Ancient ‘Comb Jelly’ Embryos

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Raman spectrometry and confocal laser scanning microscopy deeply characterize ctenophore fossils.

Gary Boas

The Meishucun assemblage of fossils in southwestern Shaanxi, China, documents the beginnings of the Cambrian explosion of animals roughly 540 million years ago — a period in which the diversity of skeletonized metazoans (multicellular animals that are more advanced than sponges) rose markedly and rapidly. A current understanding of the earliest radiation of the Cambrian development largely comes from the study of disconnected microscopic skeletal components — or “small shelly fossils” — that are found in the assemblage. These fossils typically lack identifiable soft tissue, however, and offer...Read full article

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    Published: June 2007
    Glossary
    microscopic
    Characteristic of an object so small in size or so fine in structure that it cannot be seen by the unaided eye. A microscopic object may be rendered visible when examined under a microscope.
    Basic SciencefossilsmicroscopicMicroscopyResearch & Technologyskeletonized metazoansspectroscopyTech Pulse

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