1) Animal order 2) Order belemnoidea 
Belemnoids are an extinct group of marine cephalopod, very similar in many ways to the modern squid and closely related to the modern cuttlefish. Like them, the belemnoids possessed an ink sac, but, unlike the squid, they possessed ten arms of roughly equal length, and no tentacles. The name `belemnoid` comes from the Greek word βέλεμνον.....
[n] - order of extinct dibranchiate cephalopods related to the surviving spirulas
order Belemnoidea noun order of extinct dibranchiate cephalopods related to the surviving spirulas