A cachalot - an old French word for tooth - is better known as what creature, the largest living toothed animal?
Cachalot (novel) Cachalot (novel) Cachalot (1980) is a science fiction novel by American writer Alan Dean Foster. Cachalot is an ocean planet where humans have begun building floating cities. It is also the same planet where all of Earth’s cetaceans were transplanted six hundred years ago after the Covenant of Peace was enacted with all intelligence-enhanced ocean dwellers. Four of these cities have been destroyed when a middle-aged scientist and her late-teen daughter are dispatched to the planet to discover the source of the attacks. The novel title comes from the French word "cachalot", meaning "sperm whale". This word was applied to
Animal tooth development and developmentally different from vertebrate teeth, and are unlikely to be homologous. For example, vertebrate teeth develop from a neural crest mesenchyme-derived dental papilla, and the neural crest is specific to vertebrates, as are tissues such as enamel. Animal tooth development Tooth development or odontogenesis is the process in which teeth develop and grow into the mouth. Tooth development varies among species. In fish, Hox gene expression regulates mechanisms for tooth initiation. However, sharks continuously produce new teeth throughout their lives via a drastically different mechanism. Shark teeth form from modified scales near the tongue and move outward on the