synapsids anapsids diapsids
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?. Synapsids Anapsids Diapsids. Lepidosaurs Archosaurs. Fig 12-3. Saurischian dinos “Lizard-hips”. Who are they? Archosaur relationships. Ornithischian dinos “Bird-hips”. Pterosaurs. Other saurischians. Crocs. Birds. - PowerPoint PPT PresentationTRANSCRIPT
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Synapsids Anapsids Diapsids
?
Lepidosaurs Archosaurs
Fig 12-3
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Birds
Saurischian dinos“Lizard-hips”
Ornithischian dinos “Bird-hips”
PterosaursCrocs
Who are they? Archosaur relationships
Fig 16-2
Other saurischians
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Crocodilians
Slow, lethargic predators…
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Right!
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Monitor lizards use gular (throat) pumping
Some other lizards justStand up and run
Breathing while running: solutions in lepidosaurs
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Crocs ( and dinos?) muscles pulling liver backward and “rocking” pelvic bones
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Secondary palate and palatal valve. Function?
Adaptations:
Tongue salt glands of crocs and gharials
Pressure sensors
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Nocturnal vision
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Reproduction
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“Hard pressed evolutionists: All this leaves the poor evolutionist in a difficult situation. Whatever arguments that could be fabricated to support one mode of sex determination disintegrates when one considers the other group. Could this whole sex-in-response-to-temperature thing have been designed by a Creator with a sense of humor? It seems to me this takes far less faith to accept than some yet-to-be-conceived alleged advantage of allowing temperature to determine sex one way in crocodilians and the opposite way in most, but not all turtles. It really is difficult remaining an evolutionist! I know, for I couldn't do so after looking objectively at the facts. Can you? Should you? “
E. Norbert Smith, Ph.D.
Temperature Dependent Sex Determination TDSHigher temps = males in crocHigher temps = females in turtles
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Beware the False Dichotomy of religion vs evolution
How could phylogeny explain the difference between turtles and crocs?
Would this predict they would be the same or different??
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True flapping flight – but different from any other flier
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Pterodactyl diversity
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DinosaursLizard –hipped vs Bird-Hipped
Bird
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Birds are from Saurischians!!!
Bird
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Saurischian and Ornithischian are two alternate solutions to moving hind limb
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Ornithischians
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Saurischians
Herbivorous Sauropods Carnivorous theropods
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Archaeopteryx
Bird
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Note the intermediate conditionOf this early bird