Frogshell: alternatives and connections

A marine gastropod of the genus Crepidula. The species are numerous. It is so named from its form and interior deck.

A genus of marine univalve shells; the harp shells; -- so called from the form of the shells, and their ornamental ribs.

Any species or marine hydroids, of the genus Hydractinia and allied genera. These hydroids form, by their rootstalks, a firm, chitinou…

Any one of the numerous species of birds belonging to Garrulus, Cyanocitta, and allied genera. They are allied to the crows, but are s…

Any one of numerous genera and species of annulose worms, belonging to the order Hirudinea, or Bdelloidea, esp. those species used in…

Any one of numerous species of brachiopod shells belonging to the genus Lingula, and related genera. See Brachiopoda, and Illustration…

Of or pertaining to the sea; having to do with the ocean, or with navigation or naval affairs; nautical; as, marine productions or bod…

Any one of numerous species of Asiatic starlings of the genera Acridotheres, Sturnopastor, Sturnia, Gracula, and allied genera. In hab…

Any species of marine gastropods, of the genera Nassa, Tritia, and other allied genera of the family Nassidae; a dog whelk. See Illust…

Any one of numerous species of marine gastropods belonging to Natica, Lunatia, Neverita, and other allied genera (family Naticidae.) T…

Any marine gastropod belonging to Pleurotoma, and ether allied genera of the family Pleurotmidae. The species are very numerous, espec…

A subdivision of the taenioglossate gastropods, including the fig-shells (Pyrula), the helmet shells (Cassis), the tritons, and allied…

Any one of numerous species of Asiatic finches of the genera Carpodacus, and Propasser, and allied genera, in which the male is more o…

Any one of numerous species of marine bivalve mollusks of the genus Pecten and allied genera of the family Pectinidae. The shell is us…

Belonging to the Siluroidei, or Nematognathi, an order of fishes including numerous species, among which are the American catfishes an…

Any species of Pleurotomaria, a genus of beautiful, pearly, spiral gastropod shells having a deep slit in the outer lip. Many fossil s…

Any one of several species of handsome marine spiral shells of the genus Solarium and allied genera. The shell is conical, and usually…

Any one of numerous species of small rodents belonging to the genus Sciurus and several allied genera of the family Sciuridae. Squirre…