PHYLUM MOLLUSCA

TO PREPARE: Read over Lab 11 in your lab manual. Pay special attention to classification.

IN LAB: Carefully observe all of the specimens on display. You will be required to dissect a clam and a squid. Locate the various internal and external structures as shown in the diagrams on pages 172 - 177 and 182 - 185.

DEMO SPECIMENS

Dentalium Mercenaria mercenaria

Argopecten irradians Anodonta grandis

Busycon Geukensia demissa

Neverita duplicata Crassostrea virginica

Fasciolaria lilium Melampus bidentatus

Littorina littorea Loligo pealei

Murex Octopus vulgaris

Sinum perspectivum Nautilus

Limax Loligo plei

Corbicula fluminea Diodora

Cyrtopleura costata Chiton

Donax variabilis

Know the common names for the preceding organisms.



CLASSIFICATION OUTLINE:

Class Scaphopoda

Dentalium-tooth or tusk shell

Class Gastropoda

Busycon-whelk and whelk egg case

Neverita duplicata-shark's eye or moon shell

Fasciolaria lilium-banded tulip snail

Melampus bidentatus-black marsh snail

Littorina littorea-periwinkle

Murex-Antillean rock shell

Sinum perspectivum-white baby ear

Limax-land slug

Diodora-keyhole limpet

Class Pelycypoda/Bivalvia

Corbicula-asiatic clam

Cyrtopleura costata-angelwing clam

Donax variabilis-cochina clam

Mercenaria mercenaria-quahog

Argopecten irradians-bay scallop

Geukensia demissa-horse mussel

Crassostrea virginica-eastern oyster

Class Polyplacophora

Chiton-chiton

Class Cephalopoda

Loligo pealei-longfin squid

Loligo plei-slender or gulf squid

Octopus vulgaris-common octopus

Nautilus-Nautilus