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The Devonian (/dəˈvoʊni.ən, dɛ-/ də-VOH-nee-ən, deh-) is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.7 million years from the end of the preceding Silurian period at 419.62 million years ago (Ma), to the beginning of the succeeding Carboniferous period at 358.86 Ma. It is the fourth period of both the…
The analysis highlights History, Geography and Regions as prominent areas in the source structure around Devonian. 2 topics appear in more than one source area, which can help identify connections that are less obvious in a linear reading.
Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.
Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
The extracted context around Devonian shows recurring relationship patterns in the source. For example, Devonian → Armorica, Armorican, Armorican Terrane Assemblage, As, Avalonia, Bohemia, Carboniferous, Central America, Early Devonian, Europe, France, Franconia, Galicia-Moldanubian, Gondwana, Iberia, In, It, Late Paleozoic, Laurussia, Mediterranean Another extracted example is Devonian → Although, Amuria, Annamia, Asia, Asian, Australian, Balkhash-West Junggar Arc, Cambrian, China, Cimmerian, Further, Gondwana, Indochina, Kazakhstania, Nevertheless, North China, Other Asian, Paleo-Tethys, Paleo-Tethys Ocean, Several. Use these groups to spot repeated connection types before inspecting the individual relationships.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
early late period laurussia gondwana first land middle extinction fishes north ma plants south also marine ocean reefs continent carboniferous
TTTA extracted 364 structured relationships around Devonian. Examples in this analysis include Devonian → Celestial body → Earth and Devonian → Chronological unit → Period. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Devonian | Celestial body | Earth | 1.00 | infobox |
| Devonian | Chronological unit | Period | 1.00 | infobox |
| Devonian | Lower boundary definition | FAD of the Graptolite Uncinatograptus uniformis | 1.00 | infobox |
| Devonian | Lower boundary GSSP | Klonk, Czech Republic .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .ge… | 1.00 | infobox |
| Devonian | Lower GSSP ratified | 1972 | 1.00 | infobox |
| Devonian | Name formality | Formal | 1.00 | infobox |
| Devonian | Nickname(s) | Age of Fishes | 1.00 | infobox |
| Devonian | Regional usage | Global (ICS) | 1.00 | infobox |
| Devonian | Sea level above present day | Relatively steady around 189 m, gradually falling to 120 m through period | 1.00 | infobox |
| Devonian | Stratigraphic unit | System | 1.00 | infobox |
| Devonian | Time scale(s) used | ICS Time Scale | 1.00 | infobox |
| Devonian | Time span formality | Formal | 1.00 | infobox |
| Devonian | Upper boundary definition | FAD of the Conodont Siphonodella sulcata (discovered to have biostratigraphic issues as of 2006). | 1.00 | infobox |
| Devonian | Upper boundary GSSP | La Serre, Montagne Noire, France 43°33′20″N 3°21′26″E / 43.5555°N 3.3573°E / 43.5555; 3.3573 | 1.00 | infobox |
| Devonian | Upper GSSP ratified | 1990 | 1.00 | infobox |
The concept neighborhoods around Devonian bring nearby vocabulary together. In this analysis, examples include Early, Late and Middle. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For Devonian, one of the stronger structural bridges in this analysis connects Devonian with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around Devonian to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Geography & Regions, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — Devonian · EN edition · Analysis: TopicsToTalkAbout