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Geological Time periods - Statistics
General Stats
- This quiz has been taken 24 times
- The average score is 11 of 20
Answer Stats
| Hint | Answer | % Correct |
|---|---|---|
| Dominance of dinosaurs; appearance of the first birds. | Jurassic | 79%
|
| Ends with the largest mass extinction in Earth's history | Permian | 79%
|
| Appearance of the first dinosaurs and mammals. | Triassic | 79%
|
| Rapid diversification of life | Cambrian | 71%
|
| Rise of flowering plants; ends with the mass extinction that wiped out non-avian dinosaurs. | Cretaceous | 71%
|
| (4.6 - 4.0 Ga) The time of the Earth and Moon's creation is characterized by a molten surface and constant bombardment by asteroids | Hadean | 64%
|
| The current period, including the Pleistocene (Ice Ages) and the Holocene (the current epoch starting ~11,700 years ago). | Quaternary | 64%
|
| Known for vast coal-forming swamps; divided in the U.S. into the Mississippian and Pennsylvanian periods. | Carboniferous | 57%
|
| Often called the "Age of Fishes" | Devonian | 57%
|
| Known as the "Age of Reptiles," this era lasted from 252 to 66 Ma | Mesozoic | 57%
|
| Includes the Miocene and Pliocene epochs; characterized by the spread of grassy ecosystems. | Neogene | 57%
|
| First land plants and widespread marine invertebrates. | Ordovician | 57%
|
| The "Age of Mammals" began 66 Ma and continues today. | Cenozoic | 50%
|
| Spanning from 539 to 252 Ma, this era saw the diversification of marine life and the transition of plants and animals to land. | Paleozoic | 50%
|
| Diversification of jawed fish and early vascular plants. | Silurian | 50%
|
| (4.0 – 2.5 Ga)The cooling of the Earth's crust, the formation of the first continents, and the appearance of the earliest single-celled life. | Archean | 43%
|
| An informal grouping of the majority of Earth's lifespan, and includes ~90% of all time. | Precambrian | 43%
|
| (2.5 Ga – 539 Ma) Oxygen begins to accumulate in the atmosphere. Multicellular life and eukaryotes emerge toward the end of this eon. | Proterozoic | 43%
|
| (539 Ma – Present) This is the eon of "visible life," where complex multicellular organisms became abundant in the fossil record. It is divided into three major eras: | Phanerozoic | 36%
|
| Includes the Paleocene, Eocene, and Oligocene epochs. Mammals expand rapidly | Plaeogene | 0%
|
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