500-million-year-old embryo fossils a rare and mysterious find
Fossilized prehistoric embryos have researchers stumped -- what species did they belonged to?
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Fossilized prehistoric embryos have researchers stumped -- what species did they belonged to?
www.cbsnews.comRemains of a primitive fish contain a well-preserved embryo.
www.livescience.comThe egg was acquired in 2000, but put in storage. It was later identified as a dinosaur egg, and an embryo was found hidden within it.
www.cbsnews.comWorld's Oldest Embryo Fossils Shed Light on Dinosaur Parenting
www.discovermagazine.com(The New York Times) Is This the First Fossil of an Embryo? (Published 2019). Associated research findings from the National Library of Medicine.
www.ncbi.nlm.nih.govA recent X-ray analysis of a fossilized egg dating back 150 million years, unearthed in Utah, has unveiled the outlines of what is likely the oldest dinosaur embryo ever identified, according to paleontologists from Brigham Young University, who shared their findings yesterday. By directing X-ray beams through the mineralized egg from multiple angles, the scientists generated images that depicted the contours of a head, body, and tail, all measuring under one inch and in an early developmental...
www.nytimes.comThe Cambrian Period is a time when most phyla of marine invertebrates first appeared in the fossil record. Also dubbed the "Cambrian explosion," fossilized records from this time provide glimpses into evolutionary biology when the world's ecosystems rapidly changed and diversified. Most fossils show the organisms' skeletal structure, which may or may not give researchers accurate pictures of these prehistoric organisms. Now, researchers at the University of Missouri have found rare, fossilized...
phys.orgFossilized embryos predating the Cambrian Explosion by 10 million years provide evidence that early animals had already begun to adopt some of the structures and processes seen in today's embryos, say researchers from Indiana University Bloomington and nine other institutions in this week's Science. James Hagadorn of Amherst College led the multi-disciplinary international collaborative project.
phys.org