agnathan
pl: agnathans
Related Words
gnathostomevertebratechordatelampreyhagfishcyclostomejawgillfincartilageskeletoncraniumnotochordpharynxevolutionphylogenytaxonomyspeciesgenusfamilyorderclassanatomymorphologyprimitiveancestorextinctfossilpaleontologymarineaquaticoceanwatermucusparasitepredatorpreyfeedingrespirationcirculationheartbloodhemoglobinskinscaleepidermisdermisnervebrainspinal cordsegmentationbilateralsymmetryembryodevelopmentlarvametamorphosisadaptationdivergencecladogramlineagebiologyzoologyichthyology