GLY1102 Exam 3 Study Questions with Verified
Correct Answers
Boney rims or shelves on the back of their skulls
The common traits of marginocephalia include which of the following?
True
True or false: all ceratopsians and pachycephalosaurs have beaked mouths
Marginocephalia
Pachycephalosaurs and ceratopsians are the two main branches of the ___ clade
Primitive ceratopsians
Psitticossaurus was originally considered a member of the ornithopod family, but it is now
considered to be a:
Asia/North America
The earliest (geologically speaking) ceratopsid fossils are found in ___, but the latest, from the
end of the Cretaceous are only found in___.
False
True or false: Psitticosaurus is grouped in with ceratopsians even though it doesn't have a frill
It had a parrot-like beak
The following are all things that make psitticosaurus different from other members of the
ceratopsian family, except for the fact that ____ which is not unique to psitticosaurus
desert
One of the interesting things about protoceratops is that the fossils are always found in rocks
that indicate it lived in ___ environments
Primitive ceratopsians
Protoceratops shares physical traits with both ceratopsians and ___
The presence or absence of long post-orbital (eye) horns
, One of the key differences between the two branches of the Ceratopsidae group is:
Ceratopsinae/pachyrinosaurinae
In general, the members of ___ group had longer snouts than members of the ___ group
largest
In terms of adult size, Triceratops is one of the ___ members of the ceratopsidae group
Lacks fenestrea (openings or holes)
One of the things that makes a triceratops unique when comparing it to other ceratopsidae is
that its frill:
Back limbs upright, front limb upright
The most up-to-date idea on how triceratops stood is:
A thickening of the skull in the form of domes or knobs
The most distinctive feature of pachycephalosaurids is:
Does not have the bony dome
Dracorex is unique among pachycephalosaurs because its skull:
The location of the brain inside the skull
Evidence that supports the idea that pachycephalosaurs used their bony heads for head-butting
each other includes all but which of the following:
There are only a few fragmentary fossils
The difficulty in gaining a better understanding of pachycephalosaurs is that:
The physical change in a member of a particular species from birth to maturity
Ontogeny is the study of:
Most of the unique skull structures found within the pachycephalosaur clade actually
represent different life stages of the same species
The ontogenetic hypothesis for pachycephalosaurs proposes that:
Much higher than today
Sea level from the mid-Jurassic through the Cretaceous was:
Divided primarily into two continents- Laurasia and Gondwana
Correct Answers
Boney rims or shelves on the back of their skulls
The common traits of marginocephalia include which of the following?
True
True or false: all ceratopsians and pachycephalosaurs have beaked mouths
Marginocephalia
Pachycephalosaurs and ceratopsians are the two main branches of the ___ clade
Primitive ceratopsians
Psitticossaurus was originally considered a member of the ornithopod family, but it is now
considered to be a:
Asia/North America
The earliest (geologically speaking) ceratopsid fossils are found in ___, but the latest, from the
end of the Cretaceous are only found in___.
False
True or false: Psitticosaurus is grouped in with ceratopsians even though it doesn't have a frill
It had a parrot-like beak
The following are all things that make psitticosaurus different from other members of the
ceratopsian family, except for the fact that ____ which is not unique to psitticosaurus
desert
One of the interesting things about protoceratops is that the fossils are always found in rocks
that indicate it lived in ___ environments
Primitive ceratopsians
Protoceratops shares physical traits with both ceratopsians and ___
The presence or absence of long post-orbital (eye) horns
, One of the key differences between the two branches of the Ceratopsidae group is:
Ceratopsinae/pachyrinosaurinae
In general, the members of ___ group had longer snouts than members of the ___ group
largest
In terms of adult size, Triceratops is one of the ___ members of the ceratopsidae group
Lacks fenestrea (openings or holes)
One of the things that makes a triceratops unique when comparing it to other ceratopsidae is
that its frill:
Back limbs upright, front limb upright
The most up-to-date idea on how triceratops stood is:
A thickening of the skull in the form of domes or knobs
The most distinctive feature of pachycephalosaurids is:
Does not have the bony dome
Dracorex is unique among pachycephalosaurs because its skull:
The location of the brain inside the skull
Evidence that supports the idea that pachycephalosaurs used their bony heads for head-butting
each other includes all but which of the following:
There are only a few fragmentary fossils
The difficulty in gaining a better understanding of pachycephalosaurs is that:
The physical change in a member of a particular species from birth to maturity
Ontogeny is the study of:
Most of the unique skull structures found within the pachycephalosaur clade actually
represent different life stages of the same species
The ontogenetic hypothesis for pachycephalosaurs proposes that:
Much higher than today
Sea level from the mid-Jurassic through the Cretaceous was:
Divided primarily into two continents- Laurasia and Gondwana
