early Devonian

GPTKB entity

Statements (16)
Predicate Object
gptkbp:instanceOf geological formation
gptkbp:contains gptkb:Emsian_stage
gptkb:Lochkovian_stage
gptkb:Pragian_stage
gptkbp:endDate 393.3 million years ago
gptkbp:followedBy gptkb:middle_Devonian
https://www.w3.org/2000/01/rdf-schema#label early Devonian
gptkbp:notableFor appearance of first ammonoids
diversification of early land plants
evolution of jawed fishes
expansion of terrestrial arthropods
gptkbp:partOf gptkb:Devonian_period
gptkbp:precededBy gptkb:Silurian_period
gptkbp:startDate 419.2 million years ago
gptkbp:bfsParent gptkb:Amphibia
gptkbp:bfsLayer 5