single-species collection of organisms
family
A domestic group, or a number of domestic groups linked through descent (demonstrated or stipulated) from a common ancestor, marriage, or adoption.
Family membership through marriage or adoption apply primarily to human families. In most species, family membership is defined by common anscestry.
Needs axioms for family relationships.
http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C25173
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