Hydrodamalis
Hydrodamalis is a genus of extinct herbivorous sirenian marine mammals , and included the Steller's sea cow ( "Hydrodamalis gigas" ) , the Cuesta sea cow ( "Hydrodamalis cuestae" ) , and the Takikawa sea cow ( "Hydrodamalis spissa" ) . 
<triplet> Steller's sea cow <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <triplet> Cuesta sea cow <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <triplet> Takikawa sea cow <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon <subj> Hydrodamalis <obj> parent taxon