6Scaly Origin Of Teeth
In the quest to find out where human teeth came from, researchers turned to skates. These fish are covered in primitive scales called dermal denticles. Sharks also have them, which is why their skin feels like sandpaper.
A 2017 study found that the scales grew from neural crest cells, a critical element in mammal tooth development. A second find also suggested that teeth evolved from fish skin. Denticles, which roughly resemble teeth, also consist of dentine. A modern tooth is packed with this hard tissue.
However, the discovery does not mean that all species got their snappers this way. Research on zebra fish showed another evolutionary path where scales and teeth evolved from different types of cells. Skate skin presents a strong case that certain species grew scales as armor plating. Somehow, through millions of years, this external skeleton became modified and moved to the mouth as teeth.
5Hitler’s Death Confirmed
When Adolf Hitler realized in 1945 that he could no longer escape the invading Allied forces, he committed suicide in his bunker. The Russians found his remains and threw the body into a river. For decades, they kept skull fragments to which nobody had access. During that time, rumors abounded that the fuhrer had faked his own death.
The conspiracy theories had sound roots. It is a fact that many high-ranking Nazis escaped when Germany’s power was broken. But things took a weird turn in 2009. Nick Bellantoni, an archaeologist and bone specialist, handled Hitler’s skull at the Russian State Archive.
During a documentary for the History Channel, he declared that the fragments belonged to a woman under 40. The Archive responded by saying that Bellantoni had never been there or handled the remains.
In 2018, the Archive finally permitted French pathologists to study the fragments. The teeth had complex dental work that perfectly matched Hitler’s medical records. Blue stains and a bullet hole showed that the fuhrer’s suicide plan began with swallowing a cyanide capsule, followed by a shot to the head.
Culled From Listverse.com