Definition: The term "cyprinodontoid" refers to a group of animals that are classified as dinosaurs, but which have evolved from certain types of prehistoric fish. The name "cyprinodon" originally referred to a type of freshwater fish that lived in the Mediterranean region, while "odontoid" is an adjective used to describe something or someone who has developed from another species. The term was first coined by paleontologists and biologists in the 1960s. The