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The Ordovician (/ɔːrdəˈvɪʃi.ən, -doʊ-, -ˈvɪʃən/ or-də-VISH-ee-ən, -doh-, -VISH-ən) is a geologic period and system, the second of six periods of the Paleozoic Era, and the second of twelve periods of the Phanerozoic Eon. The Ordovician spans 43.75 million years from the end of the Cambrian Period 486.85 Ma (million years ago) to the start of the…
The analysis highlights Geography and Art as prominent areas in the source structure around Ordovician.
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 Ordovician shows recurring relationship patterns in the source. For example, Ordovician → Africa, Baltoscandia, Boda Event, By, Carbon, Darriwilian, Despite, During, Early Eocene Climatic Optimum, Early Ordovician, Early Palaeozoic Ice Age, Earth, Europe, Evidence, Floian, Further, Hibernian, Hirnantian, In, Katian Another extracted example is Ordovician → Alborz, Another, Argentinian, Articulate, Baltica, Baltican, Cambrian, Celtic, During, Faunas, Gondwana, Gondwana's, Great Ordovician Biodiversification Event, However, Iapetus Ocean, Laurentia, Laurentian, Middle Ordovician, North China, On. 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.
cambrian period late sea gondwana silurian years event first fauna brachiopods end middle time appeared land early trilobites million organisms
TTTA extracted 176 structured relationships around Ordovician. Examples in this analysis include Ordovician → Celestial body → Earth and Ordovician → Chronological unit → Period. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Ordovician | Celestial body | Earth | 1.00 | infobox |
| Ordovician | Chronological unit | Period | 1.00 | infobox |
| Ordovician | First proposed by | Charles Lapworth, 1879 | 1.00 | infobox |
| Ordovician | Lower boundary definition | FAD of the Conodont Iapetognathus fluctivagus | 1.00 | infobox |
| Ordovician | Lower boundary GSSP | Greenpoint section, Green Point, Newfoundland, Canada .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-… | 1.00 | infobox |
| Ordovician | Lower GSSP ratified | January 2000: 19 | 1.00 | infobox |
| Ordovician | Name formality | Formal | 1.00 | infobox |
| Ordovician | Name ratified | 1960 | 1.00 | infobox |
| Ordovician | Regional usage | Global (ICS) | 1.00 | infobox |
| Ordovician | Sea level above present day | 180 m; rising to 220 m in Caradoc and falling sharply to 141 m in end-Ordovician glaciations | 1.00 | infobox |
| Ordovician | Stratigraphic unit | System | 1.00 | infobox |
| Ordovician | Time scale(s) used | ICS Time Scale | 1.00 | infobox |
| Ordovician | Time span formality | Formal | 1.00 | infobox |
| Ordovician | Upper boundary definition | FAD of the Graptolite Akidograptus ascensus | 1.00 | infobox |
| Ordovician | Upper boundary GSSP | Dob's Linn, Moffat, U.K. 55°26′24″N 3°16′12″W / 55.4400°N 3.2700°W / 55.4400; -3.2700 | 1.00 | infobox |
| Ordovician | Upper GSSP ratified | 1984 | 1.00 | infobox |
The concept neighborhoods around Ordovician bring nearby vocabulary together. In this analysis, examples include Late, Middle and Cambrian. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For Ordovician, one of the stronger structural bridges in this analysis connects Ordovician with Life. 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 Ordovician to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Geography & Art, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — Ordovician · EN edition · Analysis: TopicsToTalkAbout