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

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Presentation transcript:

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

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

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

- 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

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