HAEMAL RIB
haemal rib: translation
a misnomer for a ventral rib (one of the ribs surrounding and protecting the viscera and articulating with the parapophyses of the vertebrae) based on the fallacy that it was homologous with a haemal arch bone. As some fish have ventral ribs on the caudal vertebrae with complete haemal arches, this theory cannot be accepted