Early Devonian

E27677

The Early Devonian was the initial subdivision of the Devonian Period, marked by the diversification of early fishes and the spread of primitive vascular land plants across emerging terrestrial ecosystems.

AI illustration

How this image was made

AI-generated illustration of Early Devonian

This AI-generated illustration was produced by black-forest-labs/FLUX.2-dev (1024x1024) from a prompt written by openai/gpt-oss-120b from the entity's label + description.

Prompt

Generate an image of the Early Devonian (The Early Devonian was the initial subdivision of the Devonian Period, marked by the diversification of early fishes and the spread of primitive vascular land plants across emerging terrestrial ecosystems.)

All labels observed (4)

Label Occurrences
Early Devonian canonical 7
Lower Devonian Series 3
Early Devonian Epoch 1

How this entity was disambiguated

Statements (49)

Predicate Object
instanceOf geologic time interval ⓘ
subdivision of the Devonian Period ⓘ
associatedWith Rhynie Chert fossil locality ⓘ
boundaryDefinedBy Global Boundary Stratotype Section and Point at Klonk, Czech Republic ⓘ
first appearance of the conodont Icriodus woschmidti ⓘ
characterizedBy brachiopod-rich marine faunas ⓘ
development of early terrestrial ecosystems ⓘ
diversification of early fishes ⓘ
early ammonoid ancestors ⓘ
evolution of early coral reefs ⓘ
expansion of jawed fishes ⓘ
expansion of terrestrial habitats along coastlines and floodplains ⓘ
extensive shallow epicontinental seas ⓘ
high sea levels ⓘ
marine invertebrate diversification ⓘ
presence of jawless agnathan fishes ⓘ
spread of primitive vascular land plants ⓘ
trilobite faunas in decline compared to earlier Paleozoic ⓘ
warm global climate ⓘ
chronostratigraphicUnit Lower Devonian Series ⓘ
linked to: Early Devonian
containsStage Emsian ⓘ
Lochkovian ⓘ
Pragian ⓘ
endTime approximately 393.3 million years ago ⓘ
fauna early acanthodian fishes ⓘ
early placoderm fishes ⓘ
jawless ostracoderms ⓘ
lobe-finned sarcopterygian fishes ⓘ
ray-finned actinopterygian fishes ⓘ
rugose corals ⓘ
stromatoporoid sponges ⓘ
tabulate corals ⓘ
follows Pridoli Epoch ⓘ
geologicalSetting active orogeny in Caledonian mountain belts ⓘ
assembly of Euramerica continent ⓘ
notableFossils Aglaophyton ⓘ
Rhynia ⓘ
early terrestrial arthropods in Rhynie Chert ⓘ
partOf Devonian Period ⓘ
plantFlora early lycophytes ⓘ
primitive vascular plants ⓘ
rhyniophytes ⓘ
simple leafless stems with sporangia ⓘ
zosterophylls ⓘ
precedes Middle Devonian ⓘ
startTime approximately 419.2 million years ago ⓘ
timeScale Paleozoic Era ⓘ
Phanerozoic Eon ⓘ
usedIn International Commission on Stratigraphy timescale ⓘ

How these facts were elicited

Referenced by (12)

Full triples — surface form annotated when it differs from this entity's canonical label.

Old Red Sandstone → geologicPeriodStart → Early Devonian ⓘ
Early Devonian → chronostratigraphicUnit → Lower Devonian Series ⓘ
linked to: Early Devonian
Devonian Period → hasSubdivision → Early Devonian ⓘ
Age of Fishes → includesStage → Early Devonian ⓘ
Laurussia → formedDuringPeriod → Early Devonian Period ⓘ
subject linked to: Laurussia continent
linked to: Early Devonian
Lochkovian Epoch → partOf → Early Devonian Epoch ⓘ
linked to: Early Devonian
Lochkovian Epoch → correspondsTo → Lower Devonian Series ⓘ
linked to: Early Devonian
Lochkov → geologicalPeriodAssociated → Early Devonian ⓘ
subject linked to: Lochkov, Czech Republic
Klonk Section → marksBaseOf → Lower Devonian Series ⓘ
linked to: Early Devonian
Rhynie chert → geologicalAge → Early Devonian ⓘ
subject linked to: Rhynie, Scotland