Properties (56)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Eon
|
| gptkbp:atmosphere |
increase in atmospheric oxygen
|
| gptkbp:characterizedBy |
the appearance of multicellular life
|
| gptkbp:climate |
varied from glacial to warm
|
| gptkbp:duration |
approximately 2 billion years
|
| gptkbp:finish |
541 million years ago
|
| gptkbp:follows |
gptkb:Archean_Eon
|
| gptkbp:foundedIn |
2500 million years ago
|
| gptkbp:geologicalFeatures |
banded iron formations
red_beds |
| https://www.w3.org/2000/01/rdf-schema#label |
Proterozoic Eon
|
| gptkbp:includes |
gptkb:Cryogenian_Period
Ediacaran Period Tonian Period |
| gptkbp:livePerformance |
algae
early metazoans stromatolites |
| gptkbp:notableEvent |
Snowball Earth events
development of eukaryotes formation of supercontinents Ediacaran biota emergence appearance of the first arthropods appearance of the first cnidarians appearance of the first fungi appearance of the first jellyfish development of complex life forms development of the first amphibians development of the first annelids development of the first bilateral animals development of the first bryozoans development of the first coral-like organisms development of the first flowering plants development of the first hominids development of the first mammals development of the first mollusks development of the first terrestrial ecosystems development of the first vertebrates emergence of the first chordates emergence of the first land animals evolution of the first arthropods evolution of the first birds evolution of the first echinoderms evolution of the first land plants evolution of the first primates evolution of the first reptiles evolution of the first sponges formation of the first ecosystems formation of the first true animals rise of multicellular organisms Neoproterozoic_glaciations Rodinia_supercontinent_formation breakup_of_Rodinia |
| gptkbp:notableFeature |
sexual reproduction
cell differentiation multicellularity |
| gptkbp:precededBy |
gptkb:Phanerozoic_Eon
|