Synapsids
Anapsids
Diapsids
Lepidosaurs
?
Fig 12-3
Archosaurs
Who are they? Archosaur relationships
Pterosaurs
Crocs
Ornithischian
dinos
“Bird-hips”
Fig 16-2
Saurischian
dinos
“Lizard-hips”
Other
Birds
saurischians
Crocodilians
Slow, lethargic predators…
Right!
Breathing while running: solutions in lepidosaurs
Monitor lizards use gular (throat) pumping
Some other lizards just
Stand up and run
Crocs ( and dinos?) muscles pulling liver backward and “rocking” pelvic bones
Adaptations:
Secondary palate and palatal valve. Function?
Tongue salt glands
of crocs and gharials
Pressure sensors
Nocturnal vision
Reproduction
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-totemperature 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.
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??
True flapping flight – but different from any other flier
Pterodactyl diversity
Dinosaurs
Lizard –hipped
vs
Bird
Bird-Hipped
Birds are from
Saurischians!!!
Bird
Saurischian and Ornithischian are two alternate solutions to moving hind limb
Ornithischians
Saurischians
Herbivorous Sauropods
Carnivorous theropods
Bird
Archaeopteryx
Note the intermediate condition
Of this early bird