#carina  any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom
  supertype:  #anatomical_structure__structure__complex_body_part__bodily_structure__body_structure  a particular complex anatomical structure; "he has good bone structure"
  subtype:  #carina_fornicis  ridge on the lower surface of the fornix of the brain
  subtype:  #keel.carina  the median ridge on the breastbone of birds that fly

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