Index Fossils
Relative Age
Geologic Timeline
Geologic Events
Evolutionary Relationships
100
A fossil that is used to predict the relative ages of rock layers.
What is an index fossil?
100
According to the Law of Superposition, the youngest rock layers would be...
The top
100
The oldest geologic era in the Phanerozoic Eon.
Paleozoic Era.
100
When a majority of species go extinct due to geologic events...
What is mass extinction?
100
A theropod dinosaur with feathers would be the common ancestor for this...
What are birds?
200
The number of time periods index fossils existed during...
What is one?
200
Another word for layers of rock...
What is strata?
200
The most recent geologic era.
What is Cenozoic era?
200
The dinosaurs were wiped out by this...
What is a meteor?
200
A lungfish that can survive out of water would be the common ancestor for...
What are amphibians?
300
The fossil that could be used as an index in this example.
What is an ammonite?
300
From oldest to youngest.
What is C,B,A,D,E?
300
The geologic timeline is organized by using layers of...
What is sedimentary rocks and/or fossils?
300
The worst mass extinction event occurred...
What is the end of the Paleozoic Era?
300
A reptile that gives live birth would be the common ancestor of...
What are mammals?
400
The fossil that would be an index fossil in this diagram...
The trilobite.
400
From oldest to youngest...
What is F,E,D,C,B,A?
400
The number of eras in the Phanerozoic Eon.
What is three?
400
The era where the planet was mostly covered in water...
What is Paleozoic?
400
A trilobite that can survive on land would be the common ancestor of...
What are insects/bugs/arachnids/isopods?
500
The rock layers that are the same age...
C and D
500
The youngest two layers in this image are...
What is F and L?
500
What are the three geologic eras from oldest to youngest?
Paleozoic, Mesozoic, Cenozoic
500
Pangea formed during the _______ era and split apart during the _____ era.
Paleozoic, Mesozoic
500
An amphibian that lays eggs on land would be the common ancestor of...
What are reptiles?