Patella present in the living monotremes, the platypus and the echidna. In more primitive tetrapods, including living amphibians and most reptiles (except some Lepidosaurs), the muscle tendons from the upper leg are attached directly to the tibia, and a patella is not present. In 2017 it was discovered that frogs have kneecaps, contrary to what was thought. This raises the possibility that the kneecap arose 400 million years ago when tetrapods first appeared, but that it disappeared in some animals. The word "patella" originated in the late 17th century from the diminutive form of Latin ' or ' or "paten", meaning
The Body Stealers The Body Stealers The Body Stealers, also known as "Thin Air", is a 1969 British science fiction film directed by Gerry Levy, about the disappearance of British armed forces paratroopers in mid-air whilst on a routine jump. Two investigators try to figure out what happened and uncover an alien plot to steal bodies of earthlings by snatching them out of the air. The film was also released as "Invasion of the Body Stealers". The Alien spacecraft is the Dalek saucer from the film "" "Britmovie" wrote, "This threadbare Anglo-American variation on the "Invasion of the Body Snatchers" theme sounds like