1. Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory

2. - Jawed Fish - Paired Fins - Paired nostrils - Two Chambered Heart - Cartilage Skeleton

5. - Tough Skin Covering - Dermal Teeth/Denticles - Continue towards mouth - Specialized Version: Teeth

10. - Reproductive strategies. - Rays: live bearing (viviparous) - Skates are egg laying (oviparous) - Appearance - Skates have a prominent dorsal fin - The dorsal fin is absent or reduced in rays - Most rays are kite-shaped with whip-like tails containing barb - skates have fleshier tails and lack spines. - rays are generally much larger than skates. - Skates have small teeth - Rays have plate-like teeth for crushing prey. -Protection Rays : stinging spines or barbs skates : thorny projections on their backs and tails

12. http://images.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Jaws_Great_White_Shark_South_Australia_11385720 75.jpg/ http://images.jupiterimages.com/common/detail/38/53/23315338.jpg http://www.skullsunlimited.com/graphics/tq-07-lg.jpg http://www.daviddarling.info/images/shark_anatomy.jpg http://images.google.com/imgres?imgurl=http://www.geocities.com/SouthBeach/Palms/8718/anatomy.jpg&imgrefurl=http://www.geocities.com/SouthBeach /Palms/8718/anatomy.html&h=258&w=600&sz=22&hl=en&start=1&tbnid=llUbjN83DFpftM:&tbnh=58&tbnw=135&prev=/images%3Fq%3DExternal%2BAnato my%2Bof%2BShark%26gbv%3D2%26hl%3Den%26sa%3DX http://images.google.com/imgres?imgurl=http://www.raylady.com/Potamotrygon/photos/anatomy_top.jpg&imgrefurl=http://www.raylady.com/Potamotryg on/Physiology.html&h=225&w=320&sz=42&hl=en&start=17&tbnid=8Qn- rOCXra5DnM:&tbnh=83&tbnw=118&prev=/images%3Fq%3DExternal%2BAnatomy%2Bof%2BStingRay%26gbv%3D2%26hl%3Den%26sa%3DX http://images.google.com/imgres?imgurl=http://www.sharkology.com/placoid.gif&imgrefurl=http://www.sharkology.com/skin.html&h=180&w=300&sz=11&hl =en&start=25&tbnid=uZAcsfzQKcZxNM:&tbnh=70&tbnw=116&prev=/images%3Fq%3DPlacoid%2BScales%26start%3D20%26gbv%3D2%26ndsp%3D20%26hl %3Den%26sa%3DN http://staff.tuhsd.k12.az.us/gfoster/standard/sharksca.jpg http://blogs.damar.nl/blogs/danielmarianne/WindowsLiveWriter/Swimmingwithdolphins_7724/GiantMantaRayNJ%5B1%5D.jpg http://www.elasmodiver.com/Sharkive%20images/Atlantic%20Stingray%20100.jpg http://sail-search.com/news/media/Stingray-3.jpg http://images.google.com/imgres?imgurl=http://www.flmnh.ufl.edu/fish/education/questions/multiray.jpg&imgrefurl=http://www.flmnh.ufl.edu/fish/educati on/questions/RayBasics.html&h=489&w=500&sz=95&hl=en&start=600&um=1&tbnid=3WZPqr4rZHhJnM:&tbnh=127&tbnw=130&prev=/images%3Fq%3DSkate s%26start%3D580%26ndsp%3D20%26um%3D1%26hl%3Den%26sa%3DN http://images.google.com/imgres?imgurl=http://www.thejump.net/id/longnose-chimaera.jpg&imgrefurl=http://www.thejump.net/id/longnose- chimaera.htm&h=250&w=471&sz=15&hl=en&start=1&um=1&tbnid=sgr_s5sZQUWW5M:&tbnh=68&tbnw=129&prev=/images%3Fq%3DChimaeras%26um%3D1 %26hl%3Den