Definition that contains steller's sea cow
- order sirenia an animal order including: manatees; dugongs; Steller's sea cow
- family dugongidae a family of mammals of order Sirenia including dugongs and Steller's sea cow
- sirenia an animal order including: manatees; dugongs; Steller's sea cow
- genus hydrodamalis a genus of the family Dugongidae comprising only Steller's sea cow
- hydrodamalis a genus of the family Dugongidae comprising only Steller's sea cow
- dugongidae a family of mammals of order Sirenia including dugongs and Steller's sea cow