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1. The earth is CONSTANTLY CHANGING.

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1.  Age of Mammals

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1.  the longest of all eras.

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1. when dinosaurs thrived.

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1. Precambrian.

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1. Mesozoic.

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1. the preserved remains of an organism.

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1. iving things die and their remains are covered by sediments.

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1. the age when the rock is formed.

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1. study of fossils.

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relating to or denoting the present epoch, which is the second epoch in the Quaternary period and followed the Pleistocene.

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1. smallest to greatest time frame.

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or the state of being superposed: “Yet another technique in the forensic specialist's repertoire is photo superposition” ( Patrick Nuyghe ) Geology The principle that in a group of stratified sedimentary rocks the lowest were the earliest to be deposited.

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an object made by shaping molten metal or similar material in a mold.

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Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice ( glaciers ), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils. Note : Limestone and shale are common sedimentary rocks.

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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.

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the time we are currently in.

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Eras - Paleozoic, Cenozoic, and Mesozoic.

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Eras - Paleozoic, Cenozoic, and Mesozoic.

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Mesozoic means "middle life", deriving from the Greek prefix meso-/μεσο- for "between" and zōon/ζῷον meaning "animal" or "living being". It is one of three geologic eras of the Phanerozoic Eon, preceded by the Paleozoic ("ancient life") and succeeded by the Cenozoic ("new life").

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Geology. 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.

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Gravel becomes a rock called conglomerate, sand becomes sandstone, mud becomes mudstone orshale, and the animal skeletons and plant pieces can become fossils

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to trap in amber these states of emotion and experience in some way so I can look back and ultimately think that I was writing a lot more in [insert year here] even though I probably at that time felt I did a lot more writing in some other era of my life

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or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava.

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Paleontologist believe it is 4.6 Billion Years Old

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History of rock and fossils - Geologic Time Scale

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History of rock and fossils - Geologic Time Scale

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Rocksformed during the Phanerozoic Eon may have fossils of complex animals and plants such as dinosaurs, mammals, and trees. We study Earth's history by studying the record of past events that is preserved in the rocks.

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Relative Dating of rock layers tells us that the deeper we dig - the older the rock gets.

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Relative Dating of rock layers tells us that the deeper we dig - the older the rock gets.

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Relative dating utilizes six fundamental principles to determine the relative age of a formation or event. The first principle is the Principle of Superposition which states that in an undisturbed succession of sedimentary rock, the oldest layers are on the bottom.

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Fossil is an impression left by the original organism - mold 

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Fossil is an impression left by the original organism - mold 

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he vast majority of tracks are not fossilized — they are destroyed shortly after they are made. Tracks can be obliterated by being eroded by water, blown apart by wind, stepped on by animals, or damaged by other forces.

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Trace fossils are useful for paleontologists because they tell about the activity of ancient organisms. For example, the study of dinosaur footprints has contributed significantly to our understanding of dinosaur behavior. In fact, paleontologists have learned much more about dinosaur behavior from footprint trace fossils than from dinosaur body fossils.

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The process happens when a living organism, such as a tree, gets knocked down and buried under sand and mud during a flood. The buried tree is cut off from oxygen, which prevents bacteria from rotting away the wood.

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Mold and Cast fossils Organisms buried in sediment may decay or dissolve away leaving a cavity or mold. If the space is subsequently filled with sediment, an external cast can be made. Molds and casts are three dimensional and preserve the surface contours of the organism.

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Mold and Cast fossils Organisms buried in sediment may decay or dissolve away leaving a cavity or mold. If the space is subsequently filled with sediment, an external cast can be made. Molds and casts are three dimensional and preserve the surface contours of the organism.

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Principle of superpositionn physics and systems theory, the superposition principle, also known as superposition property, states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.

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Principle of superpositionn physics and systems theory, the superposition principle, also known as superposition property, states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.

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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 ...