Phylum Mollusca 5 Classes Scaphopoda Cephalopoda Head foot

Phylum Mollusca (5 Classes) Scaphopoda Cephalopoda – Head foot Pelecypoda (Bivalvia) – Hatchet foot Polyplacophora – Many plates on a foot Gastropoda – Stomach foot

Class Scaphopoda - “tusk shells” Wampum Indians, head in the sand, captacula, eat foramniferans, respire through mantle as have no gills.

I see Spot very well I make spots all over me in order to hide! I swim faster than Spot My arms are derived from the Gastropod foot Cephalopoda - Octopuses, Squid, Nautilus, Cuttlefish…beak, pen, ink sac, chromatophores, jet propulsion………. dissection. Class

Name of oldest part? D A V P Bivalvia or Pelecypoda - clams, scallops etc. filter feeders, bivalved shells…… dissection Class

Umbo D A V P Bivalvia or Pelecypoda - clams, scallops etc. filter feeders, bivalved shells…… dissection Class

Dorsal Anterior Heart Ventricle Auricle Bulbus arteriosus Adductor muscles Mouth Gills or ctenidium – Each = 2 demibranchs Gills Visceral Mass Foot Posterior Excurrent & Incurrent siphons Mantle Ventral Schematic Diagram of a Clam Dissection

Anus Mantle Radula in mouth Gills in mantle cavity Head Chitons radula, 8 plates Class Polyplacophora

Prosobranchia – pointed shells! Subclass Dextral Aquatic GILLS Subclass Pulmonata – rounded shells! Land snails and slugs LUNG Gastropoda - snails, conchs torsion/coiling, radula, operculum. Class

Pulmonata Slug Subclass Opisthobranchia Nudibranch Egg Sac Detorsion If it looks strange, chances are its something from Class Gastropoda