Phyla of Kingdom AnimaliaPhyla of Kingdom Animalia

Porifera Cnidaria Ctenophora Platyhelminthes Ectoprocta

Mollusca Annelida Arthropoda Echinodermata Chordata

Phylum: PoriferaPhylum: Porifera Sponges: around 5,000 living species Simplest multi-cellular organisms Cellular-level organization

– Their cells are specialized– Similar cells are not organized into tissues

All sessile and benthic Filter feeders

Phylum: CnidariaPhylum: Cnidaria Radially or Biradially symmetric Tissue level of organization True organs do not occur Two basic body forms:

– Medusa: free swimming or floating– Polyp: usually sessile

Nematocysts

Phylum: CnidariaPhylum: Cnidaria Corals Hydroids Sea anemones Jellyfish Sea pens

Phylum: EchinodermataPhylum: Echinodermata

Calcereous endoskeleton Pentaradial symmetry Water vascular system (tube feet)

– Decentralized nervous system

Phylum: EchinodermataPhylum: Echinodermata

Sea stars Brittle stars Sea urchins Sand dollars Sea cucumbers

Phylum: ArthropodaPhylum: Arthropoda

Bilaterally symetrical Strongly segmented bodies Exoskeletal construction Molting required for growth More species of Arthropod than all

other species combined

Phylum: ArthropodaPhylum: Arthropoda Barnacles Shrimp Crabs Lobster Isopods Amphipods Copepods

Phylum: MolluscaPhylum: Mollusca

Bilaterally symmetrical Strongly cephalized Complicated digestive system Complicated nervous system Most have a shell Over 50,000 living species

Phylum: MolluscaPhylum: Mollusca

Abalone Nudibranchs Octopi Squid Scallops Sea hare

Mussels Oysters Clams Periwinkles Chitons Snails Limpets

Phylum: Chordata (vertebrates)Phylum: Chordata (vertebrates)

Organisms that possess a Notochord– a rod that serves to stiffen the body and act

as a support during locomotion Bilateral symmetry Segmented body Ventral heart and closed blood system Bony or cartilaginous endoskeleton

Phylum: Chordata (vertebrates)Phylum: Chordata (vertebrates) Tunicates Salps Sharks Rays Skates Bony fish

Sea lions Seals Whales Sea otters Dolphins Birds