Contains
- lamina
A thin plate or layer (especially of bone or mineral).
- comb
Ciliated comb-like swimming plate of a ctenophore.
- frill
(paleontology) a bony plate that curves upward behind the skull of many ceratopsian dinos...
- operculum
A hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of...