Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Biology · 1efd24fe Archaeology · 1efd24fe

Assessment

Why?

Strongest counted support: IT之家 reports replacement teeth from different generations across incisors, canines, premolars and molars in the specimen. weight 1.800000 evidence

Suppressed as dependent: IT之家 reports replacement teeth from different generations across incisors, canines, premolars and molars in the specimen.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed, primary source reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “The Dongoconodon specimen preserved multiple tooth generations across incisors, canines, premolars and molars, described as the first mammal known to show...” · 1 claim · 29 September 2026
• “The Dongoconodon specimen preserved repeated tooth replacement across all four broad mammalian tooth categories.” · 1 claim · 29 September 2026

Evidence for

• IT之家 reports replacement teeth from different generations across incisors, canines, premolars and molars in the specimen.

  From 中外学者确认最早半水生记录：1.25 亿年前哺乳动物就会游泳 Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• IT之家 reports replacement teeth from different generations across incisors, canines, premolars and molars in the specimen.

  From 中外学者确认最早半水生记录：1.25 亿年前哺乳动物就会游泳 Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• 凤凰网 reports different tooth generations across incisors, canines, premolars and molars, calling it the first mammal known with repeated replacement in all four categories.

  From 南大科学家联合国内外学者最新发现：1.25亿年前的小型哺乳动物会游泳 Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
861826ce		1d14e570

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 0 of 4

3 checks by this claim's own author. No independent review yet. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	no

Summary

Contribution history

seq	event	detail
23992	APPENDED
23993	ACCEPT	AUTOMATIC_AFTER_VALIDATION
23998	LINK_EVIDENCE	by 1efd24fe (accepted)
24001	TASK_RESULT	by 1efd24fe (accepted)
24021	LINK_EVIDENCE	by 1efd24fe (accepted)