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T-Shirt money this week, please! December HOURS – nhm.ku

T-Shirt money this week, please! December HOURS – www.nhm.ku.edu. Reptiles. I. General Characteristics. Scales, dry skin, some w/ bony dermal plates No larval stage, hard (leathery) shelled egg Breathe through lungs Legs with 5 toes, claws Ectothermic (cold-blooded). Tuatara.

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T-Shirt money this week, please! December HOURS – nhm.ku

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  1. T-Shirt money this week, please! • December HOURS – www.nhm.ku.edu

  2. Reptiles

  3. I. General Characteristics • Scales, dry skin, some w/ bony dermal plates • No larval stage, hard (leathery) shelled egg • Breathe through lungs • Legs with 5 toes, claws • Ectothermic (cold-blooded)

  4. Tuatara

  5. II. Tuatara • Distinctly different order (Rhynchocephalia) • Nictitating membrane (3rd eyelid) • Primitive skull structure • Lizard-like appearance, anatomically very different (very slow reproductive cycle) • A true "living fossil" • Found only on a few coastal New Zealand Islands

  6. Turtles

  7. III. Turtles • Order Testudines • 225 species • hard shell of overgrown ribs • Lack teeth - beak • Terrestrial, (tortoise or box turtle) • Semi-aquatic (terrapin) • Marine (sea)

  8. Turtles • Shell is really a bone, skin, and scale sandwich • Upper shell - Carapace • Lower shell - Plastron • Well developed senses • Most are herbivores or omnivores

  9. Marine Turtles • All 7 species are endangered • Nest sites are being destroyed • Trapped and drowned in shrimp nets • Prized for food and shell

  10. Turtles - Examples • See the lazerdisc • Classroom collection - • Sulcata Tortoise • Painted Turtle • Red-eared Slider

  11. 1. Common Snapping Turtle

  12. 1. Snapping turtle

  13. 2. Stinkpot

  14. 2. Stinkpot

  15. 3. Three-Toed Box Turtle

  16. 3. Three-Toed Box Turtle

  17. 4. Ornate Box Turtle

  18. 4. Ornate Box Turtle

  19. 5. W. Painted Turtle

  20. 5. W. Painted Turtle

  21. 6. Red-Eared Slider

  22. 6. Red-Eared Slider

  23. 7. Soft Shell

  24. 7. Soft Shell

  25. Species Account • Species account of the _________________ • Vital Statistics ( scientific name, common name, taxonomy) • Identification (shape, size, markings, general description) • Habitat (biome and range) • Behaviors (niche, feeding, when active, reproduction, etc.) • Observations (details about our specimen)

  26. Crocodilians

  27. IV. Crocodilians • Order Crocodilia, 3 families, 23 species • Crocodiles, alligators, caimans and gavials • laterally compressed tail, all semi-aquatic • 4 chambered heart • scales reinforced with bony plates • teeth set in bony sockets

  28. Crocodilians • Limited to tropics and sub-tropics • Female guards the nest • Both predator and scavenger, strongest stomach acid of any vertebrate • Am. Alligator saved by the Endangered Species Act • Adaptations – FROM THE VIDEO

  29. Lizards

  30. V. Lizards • Order squamata, suborder sauria • 3000 species • external ear opening, moveable eyelids • Tail in most readily detaches and regenerates

  31. Lizards • Keen eyesight, most are insectivores • Males are territorial • Display with head bobs, pushup displays, etc. • Many are arboreal

  32. VI. Behaviors - Thermoregulation • "cold-blooded" is more efficient • Reptiles warm up by behavior, basking • Pond turtles – out on logs • Snapping turtle – at surface • earless lizard - only head out of sand • horned lizard - changes color • Snakes on warm surfaces - roads

  33. 8. Eastern Fence Lizard

  34. 8. Eastern Fence Lizard

  35. 9. Texas Horned Lizard

  36. 9. Texas Horned Lizard

  37. 10. Ground Skink

  38. 10. Ground Skink

  39. 11. Five-Lined Skink

  40. 12. Great Plains Skink

  41. 12. Great Plains Skink

  42. 13. Racerunner

  43. 14. Western Slender Glass Lizard

  44. 14. Western Slender Glass Lizard

  45. Snakes

  46. VII. Snakes • Order Squamata, suborder serpentes • 3000 species • no external ears or eyelids • no legs, skutes • specially hinged jaw • Forked tongue, Jacobsen's organ • Most are rodent eaters • heat sensing pits and/or slit pupils in some

  47. VIII. Snakes - Locomotion • Lateral Undulation • Most common, most primitive, fish-like • Concertina Progression • coiling and uncoiling like a slinky. • Rectilinear Locomotion • using just the skutes • Sidewinding • adaptation to soft sand, desert.

  48. IX. Snakes - Feeding • "Bite and Swallow" • Most primitive • Found in garter snake and other aquatic and semi-aquatic snakes • Constrictors • Most common • Venomous • Most highly evolved • Modified teeth, salivary glands • Hemotoxins or neurotoxins

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