Common Name: Chiton Class: Polyplacophora
Scrapes algae off rock with radula 8 Overlapping Plates Phylum? Mollusca Class? Gastropoda Common name? Brown sea hare Class? Scaphopoda
Common name? Tooth shell or tusk shell
Mud
Tentacle Foot Class? Gastropoda Common name? Limpet Phylum? Mollusca
Class? Bivalvia Class? Gastropoda Common name?
Brown sea hare Phylum? Mollusca Class? Gastropoda Common name? Nudibranch Class? Cephalopoda
Cuttlefish Octopus
Squid
Nautilus Phylum? Mollusca
Class? Gastropoda Most Bivalves are Filter Feeders
A B
E
D C • A: Mantle • B: Gill • C: Mantle • D: Foot • E: Posterior adductor muscle I.D. Green: Foot I.D. Red Gills Three Body Regions 1. Head – Foot
2. Visceral Mass
3. Mantle
A B
C D • A: Radula • B: Mantle • C: Mouth • D: Foot What are these? Snail Radulas Dorsal HingeA Growth line UmboB (Anterior)
Ventral ByssalC threads
Mussel – View of Outer Shell • A: Hinge • B: Umbo • C: Byssal threads Internal Anatomy of the Bay Mussel
A
B C D • A: Labial palps • B: Mantle • C: Foot • D: Byssal threads NacreousB layer
Posterior adductorC PeriostracumA muscle
SiphonD
Mantle Byssal threads E
Internal Anatomy of the Bay Mussel • A: Periostracum • B: Nacreous layer • C: Posterior adductor muscle • D: Siphon • E: Mantle Byssal gland Mantle Gill Foot
Labial palp
Mantle Byssal threads Gill Byssal gland Mantle
Foot
Incurrent siphon Byssal Labial palp threads C D B
A
E • A: Foot • B: Gills • C: Posterior adductor muscle • D: Excurrent siphon • E: Incurrent siphon Heart G
F H
E
D
A B C • A: Foot • B: Gills • C: Mantle • D: Excurrent siphon • E: Incurrent siphon • F: Posterior adductor muscle • G: Labial palps • H: Anterior adductor muscle Siphon or 1. funnel 3. Systemic heart 2. Gill 4. Lateral mantle artery Funnel 1. Siphon or 2. Retractor 3. Ink sac 4. Nidamental gland funnel muslce I.D. Green: Funnel retractor muscle I.D. Red: Stellate ganglion I.D. Green: Funnel retractor muscle I.D. Red: Stellate ganglion E
D
F
G * A H B
* C • A: Stellate ganglion • B: Funnel (siphon) retractor muscle • C: Branchial (gill) heart • D: Tentacle • E: Arm • F: Funnel or siphon • G: Stellate ganglion • H: Rectum A
B D
C • A: Fin • B: Tip of pen • C: Tentacles • D: Funnel or siphon A
B E C F
G (Branchial Heart)
D • A: Funnel or siphon • B: Mantle • C: Ink sac • D: Fin • E: rectum/anus • F: Gill • G: Gill (branchial) heart
Anterior Cut edge of adductor Nacreous layer removed gill Heart muscle
Posterior adductor muscle
Visceral Excurrent mass siphon
Incurrent siphon
Foot Anatomy Mantle Gills Labial Of the palp Clam Anatomy Anterior Labial palps Of the adductor muscle Gill Clam
Mouth
Foot Mantle