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Sinsk Formation

geologic formation in Russia

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 22, 2026
Entity authorityQ131293241 ↗
Source-derived summary

The Sinsk Formation is a geologic formation in Central Siberia, Russia, exposed along the Lena River. It preserves fossils dating back to the Botomian stage of the Cambrian (corresponding to Cambrian Series 2). It notably contained the Sinsk Algal Lens, a Lagerstätte which preserved some soft-bodied animals that would not typically be preserved as fossils. However, the Sinsk Algal Lens has largely been destroyed by commercial fossil collectors.

Paleobiota

After Ivantsov et al., 2005 and others

Paleobiota

See also

List of fossiliferous stratigraphic units in Russia

Sinsk Event

References

External links

Various Contributors to the Paleobiology Database. "Paleobiology Database". Retrieved 17 December 2021.

Editorial summary

Begin with the source’s own compact description: “Sinsk Formation” is geologic formation in Russia. The dossier treats that line as a proposition to test through Sinsk, Formation and geologic, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2005, 2021—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Sinsk, Formation and geologic is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “geologic formation in Russia” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q131293241. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2005 and 2021.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from “Sinsk Formation” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.