General Animalia:

1. http://2.bp.blogspot.com/-qmJhqWE9UBw/T53Ccwgsz2I/AAAAAAAAAGA/N-oKbJUOZ90/s1600/METAZOA+paps+et+al+2009.jpg
   
2. http://upload.wikimedia.org/wikipedia/commons/c/cd/Animal_diversity_October_2007.jpg
   
3. Campbell, N.A., and J.B. Reece. (2008). Biology, 9th edition. San Francisco, CA: Benjamin Cummings. (ISBN 978-0-321-55823-7) 
   
4. Class notes
5. http://i300.photobucket.com/albums/nn37/apbiokid/figure_32_5.gif
   
6. http://palaeos.com/metazoa/images/DPComparison2.gif
   
7. http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20102/bio%20102%20lectures/protists/protis1.gif
   

Euplectella Aspergillum:

1. http://en.wikipedia.org/wiki/Venus'_Flower_Basket
   
2. http://animaldiversity.ummz.umich.edu/accounts/Euplectella_aspergillum/
   
3. http://www.ucmp.berkeley.edu/porifera/hexactinellida.html
   
4. http://www.le.ac.uk/bl/gat/Wedding%20shrimp.pdf
   
5. http://www.realmonstrosities.com/2011/09/venus-flower-basket.html
   
6. http://www.creationmoments.com/sites/creationmoments.com/files/images/Cage%20of%20Light.jpg
   
7. http://eol.org/pages/1033413/details
   
8. http://www.pnas.org/content/101/10/3358.full.pdf
   
9. http://cimg2.ck12.org/datastreams/f-d%3Ab01fe6946ec48ea2af88799d0971b3bd4b6b9e5c33b166190abfaa75%2BIMAGE%2BIMAGE.1
   
10. http://biology.unm.edu/ccouncil/Biology_203/Summaries/SimpleAnimals.htm
    

Lingula anatina:

1. http://www.nhm.ac.uk/nature-online/species-of-the-day/biodiversity/climate-change/lingula-anatina/taxonomy/index.html
   
2. http://www.earthsciences.hku.hk/shmuseum/image/earth_evo/05/brachiopods_l.jpg
   
3. http://upload.wikimedia.org/wikipedia/commons/d/dd/LingulaanatinaAA.JPG
   
4. http://www.ucmp.berkeley.edu/brachiopoda/bracclad.gif
   
5. http://en.wikipedia.org/wiki/Brachiopod
   
6. http://www.ucmp.berkeley.edu/phyla/lophotrochozoa.html
   
7. http://www.ucmp.berkeley.edu/brachiopoda/brachiopoda.html
   
8. http://eol.org/pages/599635/details
   

Priapulus caudatus:

1. http://upload.wikimedia.org/wikipedia/commons/6/62/Priapulus_caudatus.jpg
   
2. http://animaldiversity.ummz.umich.edu/accounts/Priapulus_caudatus/classification/
   
3. http://eol.org/pages/1533/overview
   
4. http://news.discovery.com/animals/penis-worms-digestion-evolution-121030.htm
   
5. http://reefkeeping.com/issues/2003-09/rs/images/image002.jpg
   
6. http://animals.jrank.org/pages/1585/Priapulans-Priapulida.html
   
7. http://palaeos.com/metazoa/ecdysozoa/images/Aguinaldo.gif
   

Mellita quinquiesperforata:

1. http://www.discoverlife.org/IM/I_AMC/0005/320/Mellita_quinquiesperforata,_Jekyll_island,_Glynn_County,_Georgia_2,I_AMC586.jpg
   
2. http://animaldiversity.ummz.umich.edu/accounts/Mellita_quinquiesperforata/#conservation_status
   
3. http://lanwebs.lander.edu/faculty/rsfox/invertebrates/mellita.html
   
4. http://myfwc.com/media/134694/legacy_sgcn.pdf
   
5. http://www.marinespecies.org/echinoidea/aphia.php?p=taxdetails&id=158065
   

Tachyglossus aculeatus:

1. http://www.parks.tas.gov.au/index.aspx?base=4796
   
2. http://upload.wikimedia.org/wikipedia/commons/a/a6/Echidna_(Tachyglossus_aculeatus_setosus).jpg
   
3. http://news.softpedia.com/news/Why-Do-Echidnas-Have-Four-Headed-Penises-69334.shtml
   
4. http://scientopia.org/blogs/scicurious/files/2013/01/echidna-penis4.png
   
5. http://static.neatorama.com/images/2013-09/puggle-baby-echidna.jpg
   
6. http://upload.wikimedia.org/wikipedia/commons/e/e3/Tachyglossus_Aculeatus_distribution_map-fr.svg
   
7. http://cdn2.arkive.org/media/A6/A69935B2-D0CD-4A13-91B2-83DB51EEF3C1/Presentation.Large/short-beaked-echidna-egg.jpg
   
8. http://1.bp.blogspot.com/-L8p3HajaOrI/T3BRHz72STI/AAAAAAAABXw/sY5Tsb6Vt_A/s1600/swannie11.jpg
   
9. http://en.wikipedia.org/wiki/Short-beaked_echidna
   
10. http://www.ultimateungulate.com/Images/Phylogenies/MammaliaPhylogeny.gif