Cryptozoic
E219021
Cryptozoic is an older term for the Precambrian Supereon, the vast span of Earth's early history before abundant complex life appeared in the fossil record.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cryptozoic canonical | 1 |
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
geological supereon
ⓘ
geological time division ⓘ |
| alsoKnownAs | Precambrian Supereon ⓘ |
| approximateEndAge | about 541 million years ago ⓘ |
| approximateStartAge | about 4.54 billion years ago ⓘ |
| characterizedBy | lack of abundant complex life in the fossil record ⓘ |
| contains |
development of Earth’s atmosphere
ⓘ
development of Earth’s crust ⓘ development of Earth’s oceans ⓘ earliest evidence of life ⓘ earliest known microfossils ⓘ earliest known rocks ⓘ first eukaryotic organisms ⓘ first multicellular organisms ⓘ rise of oxygen in atmosphere ⓘ |
| endBoundary | start of the Cambrian Period ⓘ |
| etymology | derived from Greek meaning “hidden life” ⓘ |
| followedBy | Paleozoic Era ⓘ |
| includes |
Archean Eon
ⓘ
Hadean Eon ⓘ Proterozoic Eon ⓘ |
| partOf |
International Chronostratigraphic Chart
ⓘ
surface form:
geologic time scale
|
| precedes | Phanerozoic Eon ⓘ |
| refersTo | vast span of Earth’s early history ⓘ |
| startBoundary | formation of Earth ⓘ |
| status | older term ⓘ |
| supersededBy |
Precambrian Supereon
ⓘ
surface form:
Precambrian
|
| timeScaleContext |
Precambrian Supereon
ⓘ
surface form:
Precambrian time
|
| usedBy | early 20th-century geologists ⓘ |
| usedIn | historical geology literature ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.