geological era
C2276
concept
A geological era is a major division of Earth's history, spanning tens to hundreds of millions of years, characterized by significant and distinguishable changes in the planet's climate, life forms, and geology.
All labels observed (8)
| Label | Occurrences |
|---|---|
| geologic era | 6 |
| geological era canonical | 4 |
| subdivision of the Proterozoic Eon | 3 |
| Archean era | 1 |
| Archean subdivision | 1 |
| eonothem/era in the geologic time scale | 1 |
| geologic time unit | 1 |
| hypothetical geological era | 1 |
Description generation (CDg)
The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.
Instruction
generate a one-sentence description for a given conceptual class. # Response Format Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: geological era
Generated description
A geological era is a major division of Earth's history, spanning tens to hundreds of millions of years, characterized by significant and distinguishable changes in the planet's climate, life forms, and geology.
Instances (12)
| Instance | Via concept surface |
|---|---|
| Paleozoic Era | geologic era |
| Cenozoic | — |
| Paleoarchean Era | geologic era |
| Eoarchean Era | — |
| Erathem | geologic time unit |
| Mesoarchean Era | geologic era |
| Neoarchean Era | — |
| Novacene epoch | hypothetical geological era |
| Paleoproterozoic Era | geologic era |
| Mesoproterozoic Era | geologic era |
| Neoproterozoic Era | geologic era |
| Mesozoic Era | — |