# data[].attributes.body
Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.

# data[].attributes.body
Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice ( glaciers ), and wind.

# data[].attributes.body
A metamorphic rock is a type of rock which has been changed by extreme heat and pressure.

# data[].attributes.body
a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.

# data[].attributes.body
In geology, petrifaction or petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.

# data[].attributes.headline
Cenozoic - the time we are currently in.

# data[].attributes.subject
Cenozoic - the time we are currently in.

# data[].attributes.body
The Cenozoic is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time.

# data[].attributes.headline
Eras - Paleozoic, Cenozoic, and Mesozoic.

# data[].attributes.subject
Eras - Paleozoic, Cenozoic, and Mesozoic.

# data[].attributes.body
The Eras are the next largest interval units into which the Geologic Time is divided and represented on the chart. Eras encompass major intervals of Time and are defined based on the fossil life-forms found in the rock layers, and the Law of Superposition. ... The Paleozoic Era, the Mesozoic Era, and the Cenozoic Era.

# data[].attributes.body
a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

# data[].attributes.headline
Sedimentary Rock - fossils forms in this layer.

# data[].attributes.subject
Sedimentary Rock - fossils forms in this layer.

# data[].attributes.body
Most of the rocks exposed at the surface of Earth are sedimentary--formed from particles of older rocksthat have been broken apart by water or wind.

# data[].attributes.headline
A bug stuck in amber - Preserved Remains

# data[].attributes.subject
A bug stuck in amber - Preserved Remains

# data[].attributes.body
An incredible array of amazing fossils have been discovered frozen in time.

# data[].attributes.headline
How old is the Planet Earth - Paleontologist believe it is 4.6 Billion Years Old

# data[].attributes.subject
How old is the Planet Earth - Paleontologist believe it is 4.6 Billion Years Old

# data[].attributes.body
Earth is the third planet from the Sun and the only object in the Universe known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4 billion years ago.

# data[].attributes.headline
History of rock and fossils - Geologic Time Scale

# data[].attributes.subject
History of rock and fossils - Geologic Time Scale

# data[].attributes.body
Fossils. Fossils are physical evidence of preexisting organisms, either plant or animal.

# data[].attributes.headline
Relative Dating of rock layers tells us that the deeper we dig - the older the rock gets.

# data[].attributes.subject
Relative Dating of rock layers tells us that the deeper we dig - the older the rock gets.

# data[].attributes.body
the younger the rocks get. the smellier the rocks get. the harder the rocks get. the older the rocks get.

# data[].attributes.headline
Fossil is an impression left by the original organism - mold 

# data[].attributes.subject
Fossil is an impression left by the original organism - mold 

# data[].attributes.body
A mold is the impression and void (space, hole) that an organism or organism's body or body part leaves in the sediment.

# data[].attributes.body
A fossil trackway is a type of trace fossil, a trackway made by an organism.

# data[].attributes.body
In geology, petrifaction or petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.

# data[].attributes.body
Organisms buried in sediment may decay or dissolve away leaving a cavity or mold.

# data[].attributes.body
the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest.

# data[].attributes.body
Uniformitarianism is defined in the authoritative Glossary of Geology as "the fundamental principle or doctrine that geologic processes and natural laws now operating to modify the Earth's crust have acted in the same regular manner and with essentially the same intensity throughout geologic time, and that past .