Phylum: Mollusca
Class: Gastropoda
Coiled shell - planispiral or helical - consists of body whorl and spire
Mostly aragonitic shell
Shell consists of one large chamber (no septa)
Aperture
Siphonal notch
Marine, non-marine, land-dwelling
Carnivorous, scavenging, deposit feeding and more
Because of their conservative shell shape it is difficult to use gastropods as environmental or stratigraphic indicators.
Phylum: Mollusca
Class: Gastropoda
Coiled shell - planispiral or helical - consists of body whorl and spire
Mostly aragonitic shell
Shell consists of one large chamber (no septa)
Aperture
Siphonal notch
Marine, non-marine, land-dwelling
Carnivorous, scavenging, deposit feeding and more
Because of their conservative shell shape it is difficult to use gastropods as environmental or stratigraphic indicators.