Major Invertebrate Phyla

Phylum Porifera

Phylum Cnidaria

Class Hydrozoa

Class Scyphozoa

Class Anthozoa

Phylum Ctenophora

Phylum Platyhelminthes

Phylum Nemertea

Phylum Annelida

Phylum Mollusca

Class Gastropoda

Class Bivalia

Class Cepholopoda

Phylum Arthropoda

Class Crustacea

Phylum Ectoprocta

Phylum Chaetognatha

Phylum Echinodermata

Class Asteroidea

Class Ophiuroidea

Class Echinodea

Class Holothuroidea

Class Crinoidea

Phylum Chordata

Phylum Porifera

Examples

Major Characteristics

Feeding

Distinguishing Features

Habitat

Organization Symmetry

Phylum Cnidaria

Examples/Classes

Major Characteristics

Feeding

Distinguishing Features

Two Body Forms

Organization Habitat

Symmetry

Phylum Mollusca

Examples/Classes

Major Characteristics

Feeding

Distinguishing Features

Organization Habitat

Symmetry

Phylum Arthropoda Class Crustacea

Examples

Major Characteristics

Feeding

Distinguishing Features

Organization Habitat

Symmetry

Phylum Echinodermata

Examples

Major Characteristics

Feeding

Distinguishing Features

Habitat Organization

Symmetry

Worms

Major Characteristics

Feeding

Distinguishing Features

Major Marine Phyla

Phylum Platyhelminthes Phylum Nermertea

Phylum Annelida

Classes

Habitat

Organization

Symmetry