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Selandian: Stratigraphic definition, Fauna and Flora & Overview

The Selandian is a stage in the Paleocene. It spans the time between 61.66 and 59.24 Ma. It is preceded by the Danian and followed by the Thanetian. Sometimes the Paleocene is subdivided in subepochs, in which the Selandian forms the "middle Paleocene".

Language: English [EN]
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Selandian topic overview

The analysis highlights Stratigraphic definition, Fauna and Flora and Overview as prominent areas in the source structure around Selandian.

Related topics
52
Source areas
3
Connected nodes
55
Extracted relationships
44
Concept neighborhoods
14
Bridge connections
55

What this topic covers Research coverage

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.

Stratigraphic definition · 33 topics
Fauna and Flora · 15 topics
Overview · 4 topics

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.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Celestial body
Earth
Chronological unit
Age
Formerly part of
Tertiary Period/System
Lower boundary definition
Onset of sea-level drop and carbon isotope shift
Lower GSSP ratified
2008
Name formality
Formal

Explore all related topics Closing gaps

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.

Overview

Stratigraphic definition

Fauna and Flora

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Selandian connects Entity context

The extracted context around Selandian shows recurring relationship patterns in the source. For example, Selandian → Alfred Rosenkrantz, At, Basque Country, Danish, Denmark, Fasciculithus, Global Boundary Stratotype Section, GSSP, It, Itzurun, Neochiastozygus, NP4, NP5, Point, Sjælland, Spain, The, The Selandian, Zealand, Zumaia Another extracted example is Selandian → GeoWhen Database, ICSStratigraphic, Norges Network, Paleogene, SelandianPaleogene. Use these groups to spot repeated connection types before inspecting the individual relationships.

Selandian

Top relations

related to Stratigraphic definition · 20
Selandian → Alfred Rosenkrantz, At, Basque Country, Danish, Denmark, Fasciculithus, Global Boundary Stratotype Section, GSSP, It, Itzurun, Neochiastozygus, NP4, NP5, Point, Sjælland, Spain, The, The Selandian, Zealand, Zumaia
related to External links · 5
Selandian → GeoWhen Database, ICSStratigraphic, Norges Network, Paleogene, SelandianPaleogene
related to Fauna and Flora · 3
Selandian → Gastornithiformes, The, Titanoboa
is a · 2
Selandian → stage in the Paleocene, unconformity
Celestial body · 1
Selandian → Earth
Chronological unit · 1
Selandian → Age
Formerly part of · 1
Selandian → Tertiary Period/System
Lower boundary definition · 1
Selandian → Onset of sea-level drop and carbon isotope shift
Lower boundary GSSP · 1
Selandian → Zumaia Section, Basque Country, Spain .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-p…
Lower GSSP ratified · 1
Selandian → 2008

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

paleogene ics stage time 40 years thanetian 59 paleocene base millions ago stratigraphic danian north mass age ma petm first

Selandian relationships Subject–Predicate–Object triples

TTTA extracted 44 structured relationships around Selandian. Examples in this analysis include Selandian → Celestial body → Earth and Selandian → Chronological unit → Age. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
SelandianCelestial bodyEarth1.00infobox
SelandianChronological unitAge1.00infobox
SelandianFormerly part ofTertiary Period/System1.00infobox
SelandianLower boundary definitionOnset of sea-level drop and carbon isotope shift1.00infobox
SelandianLower boundary GSSPZumaia Section, Basque Country, Spain .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-p…1.00infobox
SelandianLower GSSP ratified20081.00infobox
SelandianName formalityFormal1.00infobox
SelandianRegional usageGlobal (ICS)1.00infobox
SelandianStratigraphic unitStage1.00infobox
SelandianTime scale(s) usedICS Time Scale1.00infobox
SelandianTime span formalityFormal1.00infobox
SelandianUpper boundary definitionBase of magnetic polarity chronozone C26n1.00infobox
SelandianUpper boundary GSSPZumaia Section, Basque Country, Spain 43°17′59″N 2°15′39″W / 43.2996°N 2.2609°W / 43.2996; -2.26091.00infobox
SelandianUpper GSSP ratified20081.00infobox
Selandianis astage in the Paleocene0.90text
Selandianis aunconformity0.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Selandian bring nearby vocabulary together. In this analysis, examples include Base, Ics and Stage. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Selandian
    • Base
    • Ics
    • Stage
    • Years
    • Forms
    • Paleocene
    • Age
    • Ago
    • Boundary
    • Lower
    • Millions
    • Part
  • selandian
    • Base
    • Ics
    • Stage
    • Years
    • Forms
    • Paleocene
    • Age
    • Ago
    • Boundary
    • Lower
    • Millions
    • Part
  • stratigraphic definition
    • Stratigraphic
    • Ics
    • First
    • Ma
    • Petm
    • Spain
    • Age
    • Ago
    • Boundary
    • Lower
    • Mass
    • Millions
  • north american land mammal age
    • Lower
    • Part
    • North
    • Stage
    • Definition
    • Spain
    • Ago
    • Boundary
    • Millions
    • Stratigraphic
    • Base
    • Change
  • asian land mammal age
    • Lower
    • Part
    • North
    • Stage
    • Definition
    • Spain
    • Ago
    • Boundary
    • Millions
    • Stratigraphic
    • Base
    • Ics
  • global boundary stratotype section and point
    • Spain
    • Base
    • Definition
    • Lower
    • Millions
    • Part
    • Stratigraphic
    • Ics
    • Selandian
    • Stage
    • Time
    • Years
  • end-cretaceous mass extinction event
    • Petm
    • Ics
    • Paleogene
    • Ago
    • Millions
    • Stratigraphic
    • Thanetian
    • North
    • Years
    • Selandian
  • danian
    • Thanetian
    • Petm
    • Ago
    • Mass
    • Millions
    • Ics
    • Paleogene
    • Years
    • Selandian

Connections between topic areas Semantic bridges

For Selandian, one of the stronger structural bridges in this analysis connects Selandian with Stratigraphic definition. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
SelandianStratigraphic definition · splits 22 ⟂ 34
SelandianFauna and Flora · splits 40 ⟂ 16
SelandianOverview · splits 51 ⟂ 5

Map overview Semantic statistics

Selandian

Nodes56
Edges55
Triples44
Avg. degree1.96
Density0.035714
Components1

Source & methodology

TTTA analyzes the structure around Selandian to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Stratigraphic definition, Fauna and Flora & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Selandian · EN edition · Analysis: TopicsToTalkAbout

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