GLY1102 Assignment 9 Exam Questions with
Verified Correct Answers
The Triceratops research discussed in the Module 9 Tedtalk takes place in which rock
formation?
Hell Creek, Montana
Going uphill in the Hell Creek Formation, you are going:
forward in time
How do the triceratops fossils change as you move up in the rock layers of the Hell Creek
Formation in Montana?
the nose horns get bigger.
The changes in triceratops found in different rock layers of the Hell Creek Formation are a
result of:
Evolutionary changes, because you are looking at fossils preserved at different points of
geologic time.
Why are triceratops such a useful species in which to study evolutionary and age-related
change?
because the fossils are abundant so we have many to study and compare.
Consider the changes that occur in triceratops horns skulls as it matures. What change occurs
between the juvenile and adult stages?
the horns change orientation, changing from more vertical to more horizontal.
Consider the frill of a triceratops as it matures. Other than sized, how is the frill of the juvenile
different from that of the adult?
The bony points on the edge of the frill are much sharper and well defined. in the juveniles.
The largest ceratopsian skull in the Museum of the Rockies collection is from a dinosaur called
Torosaurus. A few years ago, paleontologists hypothesized that torosaurus was actually the
fully mature version of triceratops. What is the obvious difference between the adult skull of
torosaurus and the younger adult skull of triceratops?
Verified Correct Answers
The Triceratops research discussed in the Module 9 Tedtalk takes place in which rock
formation?
Hell Creek, Montana
Going uphill in the Hell Creek Formation, you are going:
forward in time
How do the triceratops fossils change as you move up in the rock layers of the Hell Creek
Formation in Montana?
the nose horns get bigger.
The changes in triceratops found in different rock layers of the Hell Creek Formation are a
result of:
Evolutionary changes, because you are looking at fossils preserved at different points of
geologic time.
Why are triceratops such a useful species in which to study evolutionary and age-related
change?
because the fossils are abundant so we have many to study and compare.
Consider the changes that occur in triceratops horns skulls as it matures. What change occurs
between the juvenile and adult stages?
the horns change orientation, changing from more vertical to more horizontal.
Consider the frill of a triceratops as it matures. Other than sized, how is the frill of the juvenile
different from that of the adult?
The bony points on the edge of the frill are much sharper and well defined. in the juveniles.
The largest ceratopsian skull in the Museum of the Rockies collection is from a dinosaur called
Torosaurus. A few years ago, paleontologists hypothesized that torosaurus was actually the
fully mature version of triceratops. What is the obvious difference between the adult skull of
torosaurus and the younger adult skull of triceratops?
