Early ossification in the skeleton of the sucker (Catostomus macrocheilus) and the guppy (Poecilia reticulata).
D000818:Animals; D002118:Calcium / Q000378:metabolism; D004435:Eating; D005399:Fishes; D007568:Jaw / Q000502:physiology; D010012:Osteogenesis; D012119:Respiration / Q000502:physiology; D013116:Spinal Cord / Q000502:physiology
D002118:Calcium