Monoplacophora - http://en.wikipedia.org/wiki/Monoplacophora
Information from Wikipedia about this class of mollusks, thought until recently to be extinct, their description and classification. |
Phylum Mollusca: Class Monoplacophora - http://bio.classes.ucsc.edu/bio136/molluscs/monoplacophora/monoplacophora.html
Annotated anatomical diagram of a monoplacophoran. |