The fossil record provides evidence of Earth’s changes over time
4.1 Tracing Evidence of Geologic Change Using Fossils
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4.2 Methods Used to Interpret Fossils
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4.3 Geologic Time
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The preserved remains (even the soft parts) of a plant or animal can likely be found in ...
amber
sediment
gemstones
Burgess Shale
Trilobites are one of the most famous groups of fossils. They are now extinct. They lived in ...
Gobi Desert
Antarctic Tundra
Fresh water lakes
Warm ocean water
Scientists who study early life forms by interpreting animal and plant fossils are called ...
geologists
geophysicists
paleontologists
archaeologists
When an organism is buried under many layers of sediment, pressure and heat build up, leaving a thin
film of carbon residue on the rock surfaces. This residue forms the outline of the organism and is called ...
petrified residue
carbonaceous film
carbon-dated remains
trace fossil residue
When an organism falls into soft sediment, like mud, its hard parts dissolve leaving a cavity called a ...
trace layer
cast
mould
chamber
There is more than one way for living organisms to become fossilized. A cavity or track that was left
behind by a living organism – providing evidence that it existed, is a type of fossil called a ...
cavity fossil
evidence fossil
trace fossil
track fossil
The process that takes thousands of years and can only happen under certain conditions is called
fossilization. The most common fossils found are ...
plants
worms
jelly fish
vertebrates
Over time layers upon layers of sediment build up , providing important information about the past.
These layers called strata revel certain fossils that lived in certain time periods. These fossils are known
as ...
trace fossils
index fossils
amber fossils
cast fossils
Geological columns are formations in sedimentary rock that help scientists to determine the age of the
fossils they find. Fossils found in column 7 will be ...
older than those found in 2 and 8
younger than those found in 10 and 6
older than those found in 4 and 3
younger than those found in 2 and 9
Scientists have found organisms intact in this type of fossil and have even been able to extract DNA from the organism, with limited success ...
shale
amber
trilobite
albertosaurus
Layers of sedimentary rock stay in their original position, with the newest layers on the top and the older layers on the bottom. These layers of rock are called ...
indexing
parent rock
rock strata
superimposed
The preserved remains of many soft tissue species have been located in the Burgess Shale Fossil Beds,
located in Yoho National Park, British Columbia. These fossils are usually the remains of ...
producers and herbivores
herbivores and consumers
consumers and decomposers
decomposers and scavengers
An important dinosaur discovery by Joseph Tyrell sparked interest in the Badlands of Drumheller. The
Royal Tyrell Museum of Paleontology was built for the 70-million-year-old dinosaur skull he named ...
Albertosaurus
Tyrannosaurus Rex
Apatosaurus
Brachiosaurus
The general time periods that organize the history of the Earth are called ...
eras
periods
years
centuries
In the Geologic Time Scale, dinosaurs ruled the land and then became extinct during this era.
Precambrian
Paleozoic
Mesozoic
Cenozoic
Scientists have inferred that there might be some relationship between dinosaurs and birds from some of the Archaeopteryx fossils because they discovered a few impressions of:
