Zoology 250 Lab 11 Study Images ECHINODERMATA, Other DEUTERSTOMES (click on tree to see full cladogram)

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Click on the following links to view images of slides (microscope or 35mm) or dissections encountered in Lab 11.

Test yourself by identifying the features labelled by arrows in these images. Can you name the higher taxonomic group to which each organism belongs? If not, use the key (for easiest use, hold the cursor down on the "key" link until you see the option "New Window with this Link"; this will open a second browser and allow you to view the key and the study image at the same time).

Echinodermata

Study images

Movies

Sea-lily (whole mount; 170K) Sea star (whole mount, pedicellaria & larva; 193K) Sea star (whole mount; 197K) Sea star (dermal gills; 77K) Sea star (arm cross section; 203K) Sea star (arm longitudinal section; 233K) Sea star (dissection, aboral; 225K) Sea star (dissection, lateral; 305K) Sea star (dissection, water-vascular system; 302K) Gorgonocephalus (whole mount; 226K) Heart urchin (whole mount & larva; 66K) Sea cucumber (dissection; 340K) Echinoderm (diversity, 9 examples; 263K)

Sea star (Asterias) podia + gills (16.0MB, by Ron Koss) Green urchin (Strongylocentrotus droebachiensis) pedicellaria (4.2MB, by Ron Koss) Purple urchin (Strongylocentrotus purpuratus) pedicellaria (5.7MB, by Ron Koss) Sea cucumber (Parastichopus californianus) feeding + buccal podia motion (17MB, by Thane Smith) Sea biscuit development (YouTube link)

Lophophorates, Hemichordates & Chordates

• Lamp shells (diversity & dissection; 233K)
• Lamp shell (face view; laminar flow through living animal; 20K)
• Moss animals (whole mount; 105K)
• Acorn worm (whole mount, dorsal; 142K)
• Sea squirt (whole mount, dissection & larva; 171K)
• Lancelet (whole mount; 310K)

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