BIOL385 DIAPSIDS EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS GRADED A++
what was also evolving when turtles were evolving in the triassic
diapsids
when was the rise of the diapsids
in the mesozoic period
what is the mesozoic period known as
the age of the reptiles
what is the devonian period known as
Age of Fishes
what are the relationships between many of the early diapsids and why
really unclear, because there are a lot of similarities between groups
what does diapsid mean
two holes in skull (fenestra)
what does the best evidence suggest all diapsids are
a monophyletic group
what are archosaurs and lepidosaurs united by
a common ancestor
what has been lost in diapsids through evolution and how did this occur
, the lower fenestra
occurred independently a lot of times
what do the vast majority of diapsids have as embryos
2 holes developing in cranium
what has mostly been retained in diapsids
the dorsal fenestra
but even in some it has also been lost
what is even more important than the fenestra of diapsids to define them?
the arches that come along with the holes
what are the great arch associated with in humans
the cheek bone
what is an example of an animal losing their arches? what does this allow for
snakes
allows for their skull to be more flexible
what can snakes do with their mouths
can open their skulls/mouths exceptionally wide
- kinetic
what do you keep if you want power in your skull?
the arches
WITH COMPLETE SOLUTIONS GRADED A++
what was also evolving when turtles were evolving in the triassic
diapsids
when was the rise of the diapsids
in the mesozoic period
what is the mesozoic period known as
the age of the reptiles
what is the devonian period known as
Age of Fishes
what are the relationships between many of the early diapsids and why
really unclear, because there are a lot of similarities between groups
what does diapsid mean
two holes in skull (fenestra)
what does the best evidence suggest all diapsids are
a monophyletic group
what are archosaurs and lepidosaurs united by
a common ancestor
what has been lost in diapsids through evolution and how did this occur
, the lower fenestra
occurred independently a lot of times
what do the vast majority of diapsids have as embryos
2 holes developing in cranium
what has mostly been retained in diapsids
the dorsal fenestra
but even in some it has also been lost
what is even more important than the fenestra of diapsids to define them?
the arches that come along with the holes
what are the great arch associated with in humans
the cheek bone
what is an example of an animal losing their arches? what does this allow for
snakes
allows for their skull to be more flexible
what can snakes do with their mouths
can open their skulls/mouths exceptionally wide
- kinetic
what do you keep if you want power in your skull?
the arches
