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    T rex soft tissue carbon dating

    Gleanings from the original paper show discoverers excited but surprised. Yesterday’s announcement of dinosaur soft tissue in Nature Communications by scientists from Imperial College London sets a new high hurdle for critics.It’s not really news, since soft tissue in dinosaur bones has been reported for over a decade now (see Bob Enyart’s list of journal papers).A relatively new area of controversy is the discovery of soft tissues in dinosaur fossils.The state of these discoveries changes every few years, so some of the standard science web sites have not kept up.Members of the Paleochronology group presented their findings at the 2012 Western Pacific Geophysics Meeting in Singapore, August 13-17, a conference of the American Geophysical Union (AGU) and the Asia Oceania Geosciences Society (AOGS).

    The fluctuation of the amount of C-14 in the atmosphere over time adds a small uncertainty, but contamination by "modern carbon" such as decayed organic matter from soils poses a greater possibility for error. Thomas Seiler, a physicist from Germany, gave the presentation in Singapore.(See 60 similar discoveries.) Here, RSR presents the scientific journals reporting, the kinds of biological material found so far, and the dinosaurs yielding up these exciting discoveries: Scientific Journals: , and others below in our chronological catalog, "the web's most complete list of dinosaur soft tissue discoveries," as published in many leading journals, according to a co-author of one of those papers.Biological Material Found: As of 2017, in fossils from dinosaur-layer and deeper strata, researchers have discovered flexible and transparent blood vessels, red blood cells, many various proteins including beta-keratin, the microtubule building block tubulin, collagen, the cytoskeleton components actin, tropomyosin, and the related motor protein myosin, and hemoglobin, bone maintenance osteocyte cells, DNA-related histone proteins, and powerful evidence for DNA including positive results from multiple double-helix tests.Another noteworthy discovery from the current paper is “structures enriched in carbon.” They write, “Elemental analysis using energy dispersive X-ray spectroscopy (EDS) established that all these structures are enriched in carbon, in contrast with the surrounding denser tissue/cement.” This raises the possibility of running carbon-14 tests on the samples.None of the authors or reporters mentioned this rather obvious follow-up step.

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