1	Deuterostomes Echinoderms Chordates
2	"Once again members of the..." Once again members of the deuterostome clade are defined by molecular data. However the deuterostomes for the most part share certain developmental characteristics.
3	"The Echinoderms are a relatively..." The Echinoderms are a relatively small group of marine animals. They have “secondary” penta-radial symmetry
4	Echinoderms
5	Echinoderms Class: Asteroidea - Starfish Class: Opiuroidea - Brittle stars Class: Echinoidea - Sea urchins Class: Crinodea - Sea lilys Class: Holothuroidea - Sea cucumbers
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7	Sea cucumbers
8	Phylum Chordata Welcome to your Phylum!
9	Chordates Characteristics Notochord Dorsal, Hollow Nerve Cord Pharyngeal Slits Muscular Postanal Tail
10	"Subphylum Urochordata - Tunicates" Subphylum Urochordata - Tunicates
11	"Subphylum Cephalochordata" Subphylum Cephalochordata
12	The Amphioxus Song Oh it’s a long way from Amphioxus, it’s a long way to go. It’s a long, long way from Amphioxus to the sweetest galI know. Goodbye fins and gill slits, Hello teeth and hair. Oh it’s a long, long way from Amphioxus, but we came from there.
13	Craniates First chordates with a head (cranium)
14	Phylum Chordata Subphylum Vertebrata
15	"Hagfishes – Class Myxini" Hagfishes – Class Myxini No jaws or vertebrae Cartilage skeleton
16	Lamprey Skeleton of cartilage with no collagen Primitive vertebrae
17	"Early vertebrates" Early vertebrates Conodonts
18	"Jawless armored vertebrates" Jawless armored vertebrates Ostracoderms
19	Eurypterids
20	Gnathostomes Jawed fishes - Placoderms Evolution of Jaws and Paired Appendages
21	Evolution of Jaws
22	Paired Appendages
23	Chondrichthyes Cartilaginous skeletons - descended from bony fish ancestors Sharks, Skates and Rays
24	Devonian fish adaptive radiation
25	Osteichthyes Bony Fishes Ray-Fined Fish (Actinopterygii)
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27	Invasion of the land Lobe-finned fishes - Sarcopterygii
28	Lungfish - Dipnoi Probably lived in temporary freshwater ponds and moved across land from one to another
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30	Origin of Tetrapods
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33	Great Moments in Evolution