1. Section 2 Invertebrate Chordates
Chapter 38
Section 2
Invertebrate Chordates

2. Phylum Chordata Chordates- animals with a vertebrate (backbone)
Have a notochord, pharyngeal pouches, dorsal nerve cord, & postanal tail

4. Evolution & Classification
Phylum Chordata is separated into three subphyla
Vertebrata
Cephalochordata
Urochordata

5. Subphylum Cephalochordata
Lancelets- notochord, dorsal nerve cord, pharyngeal pouches, & postanal tail
Live in warm shallow waters in the sand
Water leaves body through an opening called the atriopore

6. Subphylum Cephalochordata
Lancelets can swim weakly
Segmented body

7. Subphylum Urochordata
Tunicates- “sea squirts”- shoot out water when touched
Most are sessile & live on sea bottom
Filter-feed
Hermaphrodites

9. REVIEW!!! What are the three subphyla of the phylum chordata?
Name an animal from each subphyla.