the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Cephalopoda > [adjective] > belonging to order Tetrabranchiata > relating to the nautili > macrochoanitic (1)
macrochoanitic1883
Having (relatively) long septal necks; (in later use) spec. having septal necks that extend backward to the preceding septum and are invaginated…