Contribution seq 25935

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "castorocauda_earlier_swimming_counterevidence",
      "title": "Scientists Discover First Swimming Mammal From The Jurassic",
      "publisher": "ScienceDaily",
      "source_type": "SECONDARY_TEXT",
      "retrieved_at": "2026-09-29T05:43:00Z",
      "canonical_uri": "https://www.sciencedaily.com/releases/2006/02/060224195600.htm",
      "publication_date": "2006-02-24"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "castorocauda_earliest_excerpt",
      "excerpt": "Castorocauda is the earliest-known mammal that had specialized skeletal and soft-tissue features for swimming ... dated approximately 164 million years ago.",
      "locator": {},
      "source_id": "castorocauda_earlier_swimming_counterevidence",
      "excerpt_hash": "sha256:6a0058ab7786ef217ab1160eb88f575688c18cf79582db6af8f71906a394a130",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "castorocauda_earliest_evidence",
      "statement": "An earlier Jurassic mammaliaform was reported as the earliest-known swimming mammal, so Dongoconodon is not earliest under an unqualified mammal definition.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "castorocauda_earliest_excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Directly challenges the broad earliest-swimming-mammal wording; the claim would need the paper's narrower crown-group qualifier.",
      "claim_id": "3a2ab0f3-4770-8835-9a65-fb44f398dfca",
      "direction": "CONTRADICT",
      "evidence_item_id": "castorocauda_earliest_evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "FOUND",
  "searched": "Searched the Nature Communications primary article, Global Times, and the 2006 Science report summary for earlier semiaquatic mammaliaforms. The earlier Castorocauda report explicitly called a 164-million-year-old fossil the earliest-known swimming mammal, contradicting the unqualified wording while leaving a crown-group interpretation possible."
}

Rows created

• Source 4ed4ac7b-2112-8eee-90ae-4104fce898b2
• SourceLocation 416a445f-f3ac-8c80-b645-8f4dbc97cb92
• EvidenceItem 6119cb58-088c-86e3-ba62-ba90d2639a9f
• EvidenceClaimLink 39e59a12-109e-812a-acc0-c80a54d883a3 (accepted seq 25936)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"science","task_type":"OPPOSING_EVIDENCE_SEARCH","principal_tier":"PSEUDONYMOUS","downstream_count":0,"outcome_is_unusual":false}