Synapsids Anapsids Diapsids

1
Synapsids Anapsids
Diapsids
Lepidosaurs Archosaurs
Fig 12-3
2
Saurischian dinos Lizard-hips
Who are they? Archosaur relationships
Ornithischian dinos Bird-hips
Pterosaurs
Other saurischians
Birds
Crocs
Fig 16-2
3
Crocodilians
Slow, lethargic predators
4
Right!
5
Breathing while running solutions in lepidosaurs
Monitor lizards use gular (throat) pumping
Some other lizards just Stand up and run
6
Crocs ( and dinos?) muscles pulling liver
backward and rocking pelvic bones
7
Adaptations
Secondary palate and palatal valve. Function?
Tongue salt glands of crocs and gharials
Pressure sensors
8
Nocturnal vision
9
Reproduction
10
Temperature Dependent Sex Determination
TDS Higher temps males in croc Higher temps
females in turtles
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.
11
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??
12
(No Transcript)
13
True flapping flight but different from any
other flier
14
Pterodactyl diversity
15
Dinosaurs Lizard hipped vs Bird-Hipped
Bird
16
Birds are from Saurischians!!!
Bird
17
Saurischian and Ornithischian are two alternate
solutions to moving hind limb
18
Ornithischians
19
Saurischians
Herbivorous Sauropods
Carnivorous theropods
20
Bird
Archaeopteryx
21
Note the intermediate condition Of this early bird