haemal spine

haemal spine
a spine extending downwards from the lower end of the haemal arch in posterior or caudal vertebrae. Also called haemacanth and haemapophysis

Dictionary of ichthyology. 2009.

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  • Haemal arch — A haemal arch is a bony arch on the underside of a tail vertebra of a vertebrate. It may represent the ribs of that tail vertebra.The hole so formed is the haemal canal.It sometimes has a haemal spine on.The blood vessels to and from the tail run …   Wikipedia

  • haemal vertebra — a vertebra with a haemal spine, i.e. a caudal vertebra …   Dictionary of ichthyology

  • hemal spine — haemal spine …   Dictionary of ichthyology

  • hemacanth — haemal spine …   Dictionary of ichthyology

  • Sauropoda — Taxobox name = Sauropods fossil range = Late Triassic Late Cretaceous image width = 250px image caption = Alamosaurus , a titanosaur. regnum = Animalia phylum = Chordata classis = Sauropsida superordo = Dinosauria ordo = Saurischia subordo =… …   Wikipedia

  • vertebra — (plural vertebrae)) bony or cartilaginous elements surrounding the notochord or replacing it and often protecting the spinal cord and caudal vein. Vertebrae are composed of a centrum formed from two pleurocentra and two intercentra or parts of… …   Dictionary of ichthyology

  • parhypural — the last haemal spine that forms part of the the hypural plate. It is considered as a typical haemal spine or a hypural by authors but is recognised as distinct because it bears a hypurapophysis (q.v.), is notched to allow the caudal artery to… …   Dictionary of ichthyology

  • processus spinosus inferior — (plural processus spinosi inferiores)) haemal spine (a spine extending downwards from the lower end of the haemal arch in posterior or caudal vertebrae. Also called haemacanth and haemapophysis) …   Dictionary of ichthyology

  • processus spinosus ventralis — (plural processus spinosi ventrales)) haemal spine (a spine extending downwards from the lower end of the haemal arch in posterior or caudal vertebrae. Also called haemacanth and haemapophysis) …   Dictionary of ichthyology

  • vertebral counts — usually all the vertebrae are counted. If sutures are present in the urostyle, the indicated elements are counted. When sutures are absent the urostyle (if present) is usually counted as one vertebra. Vertebral counts may be separated into… …   Dictionary of ichthyology

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