See More Images
© 2009 Instituto de Geología, UNAM
© 2003 Thomas Kammer
© 2005 Nicholas Angeli
What are Other Molluscs? There are a number of less familiar groups of molluscs that have a fossil record, such as:
Tusk shells (Scaphopoda) live buried in sediment inside their tusk-shaped, conical shells. They first appear in the Cambrian.
Chitons (Polyplacophora) have a “shell” made of seven to eight plates and can be seen in tide pools attached to rocks. They first appear in the Cambrian.
Limpet-like molluscs (Monoplacophora) have a single cap-shaped shell. They first appear in the Ordovician.
First known fossil occurrence: Cambrian.
Last known fossil occurrence: Quaternary. This group has living relatives.
Cool Other Molluscs links:
Search for images of Other Molluscs on Google
See Other Molluscs from the: