1) Family argonautidae 2) Mollusk family 
Argonautidae is a family of cephalopods encompassing the modern paper nautiluses of the genus Argonauta along with several extinct genera of shelled octopods. All eggcases possessing nodes, ribs, and a double keel, with the exception of those of Kapal batavus, have been assigned to Argonauta. Eggcases lacking these morphological features have been...
[n] - represented solely by the genus Argonauta
family Argonautidae noun represented solely by the genus Argonauta