What is a broken foot? A broken foot is a condition characterized by a fracture of one of the 26 bones in your foot. The fracture may occur in your toes, ankle, heel or midfoot. A broken foot may result from a variety of injuries, including falls, accidents, or dropping an object on your foot. Osteoporosis, which is a thinning and weakening of the bones, is an additional cause of broken feet.
Period when the first true fish appeared - Crossword Clue. Below are possible answers for the crossword clue Period when the first true fish appeared. SILURIAN. from  425 million to 405 million years ago; first air-breathing animals.
The period between the extinction of the dinosaurs and the present day is called the Age of Mammals or Cenozoic. Mammals appeared on the earth long before the extinction of the dinosaurs; in fact, dinosaurs and mammals originated within 10 million years of each other, in the late Triassic about 200 million years ago.