Category: Uncategorized

THIN EGG SHELL. “A study of Hypselosaurus dinosaur eggs from southern France and the Spanish Pyrenees concluded that shell thickness was abnormally thin in up to 90 % of the samples.” https://lnkd.in/e5hTuW74 View in LinkedIn

THE LINK. “The source of that iridium was proposed to be from a huge asteroid or comet that collided with the Earth, coinciding with the time of the mass extinctions.” https://lnkd.in/e5hTuW74 View in LinkedIn

CHICKEN DEFICIENCY STUDIES. “From this pathology it was suggested that the embryos were unable to mobilise Ca from the shell and that the consequent hypocalcaemia caused muscle weakness which prevented the chicken from breaking the egg shell.” https://lnkd.in/e5hTuW74 View in LinkedIn

IRIDIUM FINGERPRINT. “The case for a catastrophic cause of mass extinction was strengthened by the discovery of a worldwide enrichment of the rare element iridium in a narrow band of geological strata formed 66 Mya.” https://lnkd.in/e5hTuW74 View in LinkedIn

VITAMIN D DEFICIENCY. “A deficiency of cholecalciferol causes a range of pathological changes, the most prominent of which is the bone disease of rickets or osteomalacia.” https://lnkd.in/e5hTuW74 View in LinkedIn

NUTRITIONAL DEATH HYPOTHESIS. “Why did the dinosaurs become extinct? Could cholecalciferol (vitamin D3) deficiency be the answer? (2019), by D. R. Fraser PhD, of the Sydney School of Veterinary Science, Australia. He took his PhD at Cambridge where he worked for nearly a decade in the MRC Dunn Nutritional labs, and presents a very interesting nutritional theory. https://lnkd.in/exW_KUxm View in LinkedIn

SUNLIGHT AS THE SOURCE. “The food of most animals contains, at most, only traces of cholecalciferol. An adequate supply of cholecalciferol can therefore only be obtained by exposure of skin to UVB radiation from the sun.” https://lnkd.in/e5hTuW74 View in LinkedIn

UNSOLVED QUESTIONS. However, paleontologists have rarely considered the biological or metabolic impact of a meteor and exactly how the dinosaurs might have died, especially those distant from a physical cause of death such as a tsunami. Most theories assume that the dust cloud caused plants to die off and reduce the dinosaur food sources. https://lnkd.in/e5hTuW74 View in LinkedIn

SKIN CONCENTRATION. “In other cells, its concentration is very low because of rapid conversion to cholesterol. Cholecalciferol is more popularly known as vitamin D3 but under natural conditions it is not a nutrient.” https://lnkd.in/e5hTuW74 View in LinkedIn

VITAMIN D METABOLISM. “A characteristic of animals that depend on solar UVB radiation to supply cholecalciferol is that its precursor, 7-dehydrocholesterol, the penultimate metabolite in the synthesis of cholesterol, accumulates in superficial skin cells.” https://lnkd.in/e5hTuW74 View in LinkedIn