ammonite

noun 0.684

chambered nautilus

noun 0.652

nautilus

noun 0.595

cephalopod

noun 0.594

molluscan

noun 0.583

notothenioid

noun 0.579

nauplius

noun 0.568

trilobite

noun 0.568

mollusc

noun 0.560

cnidarian

noun 0.557

belemnite

noun 0.552

brachiopod

noun 0.548

ophiuroid

noun 0.547

plesiosaur

noun 0.546

nudibranch

noun 0.544

gastropod

noun 0.537

noctiluca

noun 0.533

octopod

noun 0.532

echinoid

noun 0.530

nematocyst

noun 0.529

cyclopoid

noun 0.528

naiad

noun 0.528

opisthobranch

noun 0.526

ichthyosaur

noun 0.518

isopod

noun 0.517

nereid

noun 0.516

radiolarian

noun 0.514

hydroid

noun 0.512

nematode

noun 0.510

natrolite

noun 0.509

acanthodian

noun 0.509

cuttlefish

noun 0.506

bivalve

noun 0.505

nodule

noun 0.504

nodularin

noun 0.504

argonaut

noun 0.503

neptunium

noun 0.501

nodulus

noun 0.501

urodele

noun 0.500