Rhuddanian

first stage and age of the Llandovery series and epoch and of the Silurian system and period
Thing stage Q260369
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Rhuddanian

Summary

Rhuddanian is a stage[1]. Rhuddanian has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • Rhuddanian's instance of is recorded as stage[3].
  • Rhuddanian's instance of is recorded as age[4].
  • Cwm Rhuddan is named after Rhuddanian[5].
  • Rhuddanian followed Hirnantian[6].
  • Rhuddanian followed Cincinnatian[7].
  • Rhuddanian was followed by Aeronian[8].
  • Rhuddanian is part of Llandovery[9].
  • Rhuddanian is part of ICS Standard Global Chronostratigraphic (Geochronologic) Scale[10].
  • Rhuddanian's sRGB color hex triplet is recorded as 93DBC6[11].
  • Rhuddanian began on -443800000-00-00T00:00:00Z[12].
  • Rhuddanian ended on -440800000-00-00T00:00:00Z[13].
  • Rhuddanian's coordinate location is recorded as {'lat': 55.44, 'lon': -3.27}[14].
  • Rhuddanian's type locality is recorded as GSSP for the base of Rhuddanian[15].
  • Rhuddanian's named by is recorded as Charles Hepworth Holland[16].

Body

Definition and Type

Recorded instance of include stage[3] and age[4].

Origins

Cwm Rhuddan is named after Rhuddanian[5].

Use and Application

Part of include Llandovery[9], a series[17] and ICS Standard Global Chronostratigraphic (Geochronologic) Scale[10].

Why It Matters

Rhuddanian has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[2] Rhuddanian is known by 8 alternative names across languages and contexts.[18]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . International Chronostratigraphic Chart 2013/01. wikidata.org.
  2. [4] . International Chronostratigraphic Chart 2013/01. wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . International Chronostratigraphic Chart 2013/01. wikidata.org.
  5. [7] . A Dictionary of Geology and Earth Sciences. Retrieved . oxfordreference.com. Provenance: wikidata.org.
  6. [8] . International Chronostratigraphic Chart 2013/01. wikidata.org.
  7. [9] . International Chronostratigraphic Chart 2013/01. wikidata.org.
  8. [10] . stratigraphy.org. stratigraphy.org. Provenance: wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . stratigraphy.org. stratigraphy.org. Provenance: wikidata.org.
  14. [16] . wikidata.org.

Inline context (facts about related entities)

  1. [17] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikidata sitelinks. wikidata.org.
  2. [18] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Rhuddanian. Retrieved May 3, 2026, from https://4ort.xyz/entity/rhuddanian
MLA “Rhuddanian.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/rhuddanian.
BibTeX @misc{4ortxyz_rhuddanian_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Rhuddanian}}, year = {2026}, url = {https://4ort.xyz/entity/rhuddanian}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Rhuddanian — https://4ort.xyz/entity/rhuddanian (retrieved 2026-05-03)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 7d ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    Followed by
    Named after Cwm Rhuddan
    Start time -443800000-00-00T00:00:00Z
    Coordinate location {'lat': 55.44, 'lon': -3.27}
    + 16 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.