Term
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Definition
| remains or physical evidence of an organism preserved by geologic processes |
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Term
| What is one thing that slows the decaying process of an organism? |
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Definition
| If the organism is buried |
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Term
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Definition
| Tree sap moves over an insect, and it is buried in sediment |
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Term
| What is the limit to an Amber Fossil? |
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Definition
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Term
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Definition
| Process in which minerals replace an ornanism's tissues |
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Term
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Definition
| Spaces within an organism fill with sediments |
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Term
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Definition
| Proces in which an organism's tissues are completely replaced by minerals |
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Term
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Definition
| Pools of sticky thick oil that animals have fallen in and gotten stuck |
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Term
| What is an example of an Asphalt Fossil location? |
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Definition
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Term
| What is the limit to Asphalt Fossils? |
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Definition
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Term
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Definition
| Something freezes which slow down it's chemical reactions. |
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Term
| What is the limit to Ice Fossils? |
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Definition
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Term
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Definition
| Fundamental: Molds and Casts |
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Term
| What are the 5 types of fossils? |
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Definition
| Amber, Asphalt, Ice, Petrified, and Rock |
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Term
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Definition
| Any naturally preserved evidence of animal activity |
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Term
| What do trace fossils often reveal? |
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Definition
How big and how fast an animal was moving.
If it was moving in a herd or alone. |
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Term
| What are the three types of trace fossils? |
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Definition
Footprints- fill with sediment
Burrows- tunnels made by animals that bury in sediment
Caprolite- preserved in animal dung |
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Term
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Definition
| CAVITY in rock where a plant or animal was buried |
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Term
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Definition
| Object created when sediments FILL a mold and becomes rock |
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Term
| How does the fossil record reveal history of environmental change? |
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Definition
Marine fossils help show us where ancient seas, lakes, etc. once were.
Plant and animal fossils can show past climates. |
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Term
| What do scientists study to help interpret how life changed overtime? |
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Definition
| The relationships between rocks. Older rocks contain different organisms than younger, and dating above and below fossils can determine the time span of an organism's life. |
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Term
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Definition
| Fossils of organisms that lived during a relatively shrt, well-defined geologic time span. |
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Term
| What does it take to have a fossil become an index fossil? |
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Definition
| It has to be found in layers around the world. |
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Term
| What are the two types of Index Fossils? |
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Definition
| Ammonities and Tribolites |
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Term
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Definition
| Tropites- marine mollusk similar to modern squid |
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Term
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Definition
| Life between 230 M and 208 M years ago |
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Term
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Definition
| Phacops- extinct, closest relative is horse shoe crab |
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Term
| When did Tribolites live? |
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Definition
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Term
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Definition
| Represents the billions of years that have passed since the 1st rock formation |
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Term
| List the divisions of the Geologic Time Scale in order from largest to smallest |
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Definition
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Term
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Definition
| Hadean, Archean, Proterozoic, Phanerozoic |
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Term
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Definition
No Life (formation of the Earth)
Cooling/Hardening of crust. Creation of the oceans and atmosphere. |
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Term
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Definition
Prokaryotes (no nucleus cells)
Creation of bacteria.
Unicellular. |
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Term
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Definition
Eukaryotes (nucleus)
Protozoin.
Chloraplast and Midocondria.
Unicellular with complex structure. |
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Term
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Definition
Multicellular Life. (3 kingdoms- fungi, plants and animals)
Substantial Fossil Record. |
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Term
| What are the 3 eras of the Phanerozoic Eon (younget to oldest)? |
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Definition
| Cenozoic, Paleozoic, Mesozoic |
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Term
| What are the periods of the Cenozoic Era (youngest to oldest)? |
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Definition
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Term
| What are the periods of the Mesozoic Era (youngest to oldest)? |
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Definition
| Cretaceous, Jurassic, Triassic |
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Term
| What are the periods of the Paleozoic Era (youngest to oldest)? |
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Definition
| Permian, Pennsylvanian, Mississippian, Devonian, Silurian, Ordovician, Cambrian |
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Term
| What Eon, Era, Period, and Epoch do we live in right now? |
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Definition
| Phanrozoic Eon, Cenozoic Era, Quaternary Period, and Holocene Epoch |
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Term
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Definition
Age of Mammals
Competition with dinosaurs.
Developed to Adapt. |
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Term
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Definition
Age of Reptiles
Smal animals and birds also formed.
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Term
| What marked the end of the Mesozoic Era? |
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Definition
| 15% to 20% of species became extinct (dinosaurs) because of climate change. |
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Term
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Definition
Age of Invertibrates
Insects abundant.
Marine life flourished.
Land plants bloomed.
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Term
| What marked the end of the Paleozoic Era? |
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Definition
| 90% of species extinct because of ocean change |
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