True-False
That they grew as quickly as mammals & birds and may have
been endothermic has been documented by Jack Horner for many dinosaurs
that have densely vascularized bone.
Jack Horner has documented that many dinosaurs had densely vascularized
bone, indicating that they grew as quickly as mammals & birds
and may have been endothermic.
Although there are major problems with using museum specimens, Bob Bakker has shown that dinosaur predator-prey ratios support the idea that dinosaurs were endothermic.
That dinosaur fossils have been found at high paleolatitudes indicates they were ectothermic like modern leatherback turtles.
Small dinosaurs were probably endothermic; medium sized dinosaurs were probably endothermic when young but switched to gigantothermy as adults; and large dinosaurs used gigantothermy.
According to Bob Bakker, the plates of Stegosaurus could
wiggle, to be used in defense (along with its formidable tail
spikes).
The plates of Stegosaurus could wiggle, to be used in defense
(along with its formidable tail spikes), according to Bob Bakker.
Relative brain size in dinosaurs has nothing to contribute to the discussion of whether or not dinosaurs were endothermic.
Multiple Choice
What aspect(s) of dinosaur posture is/are also found as a
characteristic of living endotherms (birds & mammals)?
What characteristic(s) of living endotherms (birds & mammals)
is/are also found as an aspect of dinosaur posture?
A. bipedal B. fully erect stance C. long-leggedness D. none of
these E. all of these
Dr. Spotila thinks dinosaurs operated by ______________________________,
the process whereby a cold-blooded animal keeps a relatively constant
body temperature because of large size.
The process whereby an animal that is cold-blooded but keeps a
relatively constant body temperature because of large size is
called ______________________________, which is how Dr. Spotila
thinks dinosaurs operated.
A. ectothermy B. endothermy C. gigantothermy D. warm-bloodedness
E. none of these
Fill in the Blank
The characteristic of living endotherms (birds & mammals)
also found as an aspect of dinosaur posture is bipedality
/ fully erect stance / long-leggedness (circle one).
A fully erect stance / Long-leggedness / Bipedality
(circle one) is the aspect of dinosaur posture also found as
a characteristic of living endotherms (birds & mammals).
True or False (Circle one) Relative brain size in dinosaurs
has nothing to contribute to the discussion of whether or not
dinosaurs were endothermic.
True or False (Circle one) Small theropods were as smart
(had the same EQ's) as living mammals & birds of the same
size.