class: condrichthyes sharks, rays, skates, and chimaeras michael slonkosky kyle moran matt gregory
TRANSCRIPT
![Page 1: Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory](https://reader036.vdocuments.site/reader036/viewer/2022070307/551a24d7550346545e8b45f8/html5/thumbnails/1.jpg)
The Cartilaginous FishClass: Condrichthyes
Sharks, Rays, Skates, and Chimaeras
Michael SlonkoskyKyle MoranMatt Gregory
![Page 2: Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory](https://reader036.vdocuments.site/reader036/viewer/2022070307/551a24d7550346545e8b45f8/html5/thumbnails/2.jpg)
Cartilaginous Characteristics
-Jawed Fish-Paired Fins-Paired nostrils-Two Chambered Heart-Cartilage Skeleton
![Page 3: Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory](https://reader036.vdocuments.site/reader036/viewer/2022070307/551a24d7550346545e8b45f8/html5/thumbnails/3.jpg)
External Anatomy of Shark
![Page 4: Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory](https://reader036.vdocuments.site/reader036/viewer/2022070307/551a24d7550346545e8b45f8/html5/thumbnails/4.jpg)
External Anatomy of Ray
![Page 5: Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory](https://reader036.vdocuments.site/reader036/viewer/2022070307/551a24d7550346545e8b45f8/html5/thumbnails/5.jpg)
Placoid Scales
-Tough Skin Covering-Dermal Teeth/Denticles-Continue towards mouth -Specialized Version: Teeth
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Reproductive System
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![Page 8: Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory](https://reader036.vdocuments.site/reader036/viewer/2022070307/551a24d7550346545e8b45f8/html5/thumbnails/8.jpg)
![Page 9: Class: Condrichthyes Sharks, Rays, Skates, and Chimaeras Michael Slonkosky Kyle Moran Matt Gregory](https://reader036.vdocuments.site/reader036/viewer/2022070307/551a24d7550346545e8b45f8/html5/thumbnails/9.jpg)
Skate or Ray?
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Differences-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.
-ProtectionRays : stinging spines or barbs skates : thorny projections on their backs and tails