Geologic time scale worksheet answer key – Embark on an enlightening journey through the geologic time scale with our comprehensive answer key, a gateway to understanding the captivating narrative of our planet’s past. This guide illuminates the distinct eras and periods that have shaped Earth’s history, revealing the major events that have left an indelible mark on its landscapes and ecosystems.
Our meticulously crafted answer key provides a profound understanding of the geologic time scale, empowering you to navigate the intricacies of Earth’s history with confidence. Explore the dawn of life in the Precambrian Era, witness the rise and fall of ancient civilizations during the Paleozoic and Mesozoic Eras, and unravel the dynamic forces that have shaped our planet during the Cenozoic Era.
Immerse yourself in the captivating story of Earth’s evolution, guided by our authoritative answer key.
Geologic Time Scale Worksheet Answer Key
The geologic time scale is a system of chronological measurement that divides the history of the Earth into eras, periods, and epochs. It is used by geologists to organize and understand the vast amount of time that has passed since the Earth’s formation.
The geologic time scale is divided into four eras: the Precambrian, the Paleozoic, the Mesozoic, and the Cenozoic. Each era is further divided into periods, and each period is further divided into epochs. The following table provides the answer key for a geologic time scale worksheet:
| Era | Period | Epoch |
|---|---|---|
| Precambrian | Hadean | N/A |
| Precambrian | Archean | N/A |
| Precambrian | Proterozoic | Paleoproterozoic |
| Precambrian | Proterozoic | Mesoproterozoic |
| Precambrian | Proterozoic | Neoproterozoic |
| Paleozoic | Cambrian | Terreneuvian |
| Paleozoic | Cambrian | Series 2 |
| Paleozoic | Cambrian | Miaolingian |
| Paleozoic | Cambrian | Furongian |
| Paleozoic | Ordovician | Tremadocian |
| Paleozoic | Ordovician | Floian |
| Paleozoic | Ordovician | Darriwilian |
| Paleozoic | Ordovician | Sandbian |
| Paleozoic | Ordovician | Katian |
| Paleozoic | Ordovician | Hirnantian |
| Paleozoic | Silurian | Llandovery |
| Paleozoic | Silurian | Wenlock |
| Paleozoic | Silurian | Ludlow |
| Paleozoic | Silurian | Pridoli |
| Paleozoic | Devonian | Lochkovian |
| Paleozoic | Devonian | Pragian |
| Paleozoic | Devonian | Emsian |
| Paleozoic | Devonian | Eifelian |
| Paleozoic | Devonian | Givetian |
| Paleozoic | Devonian | Frasnian |
| Paleozoic | Devonian | Famennian |
| Paleozoic | Carboniferous | Mississippian |
| Paleozoic | Carboniferous | Pennsylvanian |
| Paleozoic | Permian | Cisuralian |
| Paleozoic | Permian | Guadalupian |
| Paleozoic | Permian | Lopingian |
| Mesozoic | Triassic | Early Triassic |
| Mesozoic | Triassic | Middle Triassic |
| Mesozoic | Triassic | Late Triassic |
| Mesozoic | Jurassic | Early Jurassic |
| Mesozoic | Jurassic | Middle Jurassic |
| Mesozoic | Jurassic | Late Jurassic |
| Mesozoic | Cretaceous | Early Cretaceous |
| Mesozoic | Cretaceous | Late Cretaceous |
| Cenozoic | Paleogene | Paleocene |
| Cenozoic | Paleogene | Eocene |
| Cenozoic | Paleogene | Oligocene |
| Cenozoic | Neogene | Miocene |
| Cenozoic | Neogene | Pliocene |
| Cenozoic | Quaternary | Pleistocene |
| Cenozoic | Quaternary | Holocene |
Q&A
What is the geologic time scale?
The geologic time scale is a system that organizes Earth’s history into distinct eras and periods based on major geologic events and the fossil record.
How can I use the geologic time scale worksheet answer key?
Use the answer key to check your answers to the geologic time scale worksheet and enhance your understanding of Earth’s history.
What are the major events that occurred during the Paleozoic Era?
The Paleozoic Era witnessed the diversification of life forms, including the emergence of fish, amphibians, and reptiles, as well as the formation of vast mountain ranges.
