Acipenseriformes

Acipenseriformes /æsɪˈpɛnsərɪfɔːrmiːz/ is an order of basal ray-finned fishes that includes the sturgeons and paddlefishes, as well as some extinct families.

Notable characteristics of Acipenseriformes include:


 * Cartilaginous endoskeleton
 * Lack of vertebral centrum
 * Spiral valve intestine
 * Conus arteriosus