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The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories ( For more information about these ontologies, see the MGI Publications Page at

Term:abnormal coccyx morphology
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Accession:MP:0010114 term browser browse the term
Definition:any structural anomaly of the rostral-most segment of the vertebral column that is formed by the fusion of three to five coccygeal vertebrae in adult humans and tailless primates
Comment:In humans and other tailless primates (e.g. great apes), the coccyx is the remnant of a vestigial tail. It consists of 3-5 separate or fused vertebrae (the coccygeal vertebrae) below the sacrum.
Synonyms:exact_synonym: abnormal tail bone morphology

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  mammalian phenotype 5400
    skeleton phenotype 434
      abnormal skeleton morphology 339
        abnormal axial skeleton morphology 43
          abnormal vertebral column morphology 11
            abnormal coccyx morphology 0
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