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Synapsids Anapsids Diapsids ? Lepidosaurs Archosaurs Fig 12-3.

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Presentation on theme: "Synapsids Anapsids Diapsids ? Lepidosaurs Archosaurs Fig 12-3."— Presentation transcript:

1 Synapsids Anapsids Diapsids ? Lepidosaurs Archosaurs Fig 12-3

2 Extinct Lepidosaurs Ichthyosaurs Plesiosaurs Mosasaurs

3 Living Lepidosaurs - Sphenodontids - the tuatara of New Zealand

4 Living Lepidosaurs Squamates – Lizards, snakes and amphisbaenians Fig 13-1 Iguanas, chameleons, agamids Skinks, alligator lizards, Snakes, amphisbaenians, Varanids, gila monsters, geckos

5 “Lizard” Locomotion

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7 “Lizard” Feeding See this site: http://jan.ucc.nau.edu/~kiisa/lizardmovies.html

8 Lizard foraging mode and ecological/morphological traits Table 13.5 Sit and wait Mitochondria, etc Widely foraging Mitochondria, etc Horned lizard Whiptail Where would Gila monsters fit?

9 1.A sit and wait predatory lizard would likely be territorial/nonterritorial, And would have more/less mitochondria than a wide-ranging lizard. 2.Gila monsters cool their body through evaporative cooling from what structure? 3.What is the function of the left-to right shunt in a turtle? 4.How does a turtle cause blood to shift from left to right? 5.Nest predation in painted turtles was related to rainfall. When there was lots of Rain, nest predation was higher/lower, presumably because _____________ ___________________

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12 Challenges of tubular body - getting enough food down a small mouth 2 Solutions

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16 Subduing large prey when you have no limbs Opisthoglyphous Solenoglyphous Proteroglyphous

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18 “Lizard” reproduction

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