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27 lis 2013 · A T. rex found with soft tissue preserved in her bones was an 'iron lady,' according to new research finding that iron kept the tissues from decaying for millennia.
1 maj 2014 · Mounting evidence from dinosaur bones shows that, contrary to common belief, organic materials can sometimes survive in fossils for millions of years
24 wrz 2021 · Here, we analyze additional dinosaur cartilage in Caudipteryx (STM4-3) from the Early Cretaceous Jehol biota of Northeast China. The cartilage fragment is highly diagenetically altered when...
9 cze 2015 · Here, we examined eight dinosaur bones from the Cretaceous period, none of which are exceptionally preserved. We used electron microscopy and a focused ion beam (FIB), as part of a novel method...
1 sty 2013 · Multiple lines of evidence support endogeneity of osteocyte-like microstructures in two dinosaurs. We show the first binding of bone-specific monoclonal antibody to ‘cells’ of these dinosaurs. Four independent lines of evidence support the presence of a component chemically consistent with DNA. We propose a novel mechanism for the ...
3 cze 2021 · The recent discovery of preserved cells and soft tissues in certain dinosaur bones seems incompatible with an age of millions of years, given the expectation that cells and soft tissues should have decayed away after millions of years. However, evidence from radiometric dating shows that dinosaur fossils are indeed millions of years old.
12 sty 2020 · A histological ground-section from a duck-billed dinosaur nestling (Hypacrosaurus stebingeri) revealed microstructures morphologically consistent with nuclei and chromosomes in cells within calcified cartilage. We hypothesized that this exceptional cellular preservation extended to the molecular level and had molecular features in common with ...
