Animal Diversity
Figure 32.4 A traditional view of animal diversity based on body-plan grades
Figure 32.8 Animal phylogeny based on sequencing of SSU-rRNA
Figure 32.5 Body symmetry
Figure 32.13x Burgess Shale fossils
Figure 32.13 A sample of some of the animals that evolved during the Cambrian explosion
Figure 33.1 Review of animal phylogeny
Phylum Porifera
Figure 33.3 Anatomy of a sponge
Radial
Phylum Cnidaria
Figure 33.4 Polyp and medusa forms of cnidarians
Figure 33.5 A cnidocyte of a hydra
Table 33.1 Classes of Phylum Cnidaria
Phylum Ctenophora
Bilateral
Figure 32.6 Body plans of the bilateria
Phylum Platyhelminthes
Table 33.2 Classes of Phylum Platyhelminthes
Figure 33.10 Anatomy of a planarian
Figure 33.12 Anatomy of a tapeworm
Phylum Rotifera
Figure 33.13 A rotifer
Phylum Nematoda
Figure 33.25a Free-living nematode
Lophophorates - several phyla
Figure 33.14 Lophophorates: Bryozoan (left), brachiopod (right)
Phylum Mollusca
Figure 33.16 Basic body plan of mollusks
Table 33.3 Major Classes of Phylum Mollusca
Figure 33.18 The results of torsion in a gastropod
Figure 33.21 Anatomy of a clam
Phylum Annelida
Figure 33.23 Anatomy of an earthworm
Table 33.4 Classes of Phylum Annelida
Phylum Arthropoda
Figure 33.26 External anatomy of an arthropod
Table 33.5 Some Major Arthropod Classes
Figure 33.30b Spider anatomy
Figure 33.33 Anatomy of a grasshopper, an insect
Bilateral Deuterostomes
Figure 32.7 A comparison of early development in protostomes and deuterostomes
Phylum Echinodermata
Figure 33.38 Anatomy of a sea star
Phylum Chordata
Figure 34.2 Chordate characteristics
Figure 34.3 Subphylum Urochordata: a tunicate
Figure 34.4a Subphylum Cephalochordata: lancelet anatomy
Table 33.7 Animal phyla
Email: rlee@mail.wsu.edu
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