Contribution seq 25426

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "dongoconodon_primary_20260929",
      "title": "A polyphyodont, semiaquatic eutriconodontan mammal from the Early Cretaceous of China",
      "publisher": "Nature Communications",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T05:19:00Z",
      "canonical_uri": "https://www.nature.com/articles/s41467-026-77339-w",
      "publication_date": "2026-09-28"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "fossil_scope",
      "excerpt": "Lower Cretaceous Jiufotang Formation at Changzigou locality, Sanjiazi Town of Lingyuan City, Liaoning, China, dated to approximately 120 million years ago. Skeleton lacking left humerus, ulna, and radius. IMMNH-PV01700.",
      "locator": {},
      "source_id": "dongoconodon_primary_20260929",
      "excerpt_hash": "sha256:e3a59741545365b5150b599dae497944020be3e49ad318b0bae78757305a08e6",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "tooth_inference",
      "excerpt": "Given that the first incisor has a replacement tooth, that replacement represents a third generation (i.e., polyphyodonty).",
      "locator": {},
      "source_id": "dongoconodon_primary_20260929",
      "excerpt_hash": "sha256:daa1154329b50fe7d0dfc95d1f5c803cb4b91779f66e1958fc7eabb880609ef7",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "locomotion_inference",
      "excerpt": "Our results show that Dongoconodon falls within the locomotor morphospace formed by the nine semiaquatic species, with a 100% posterior probability supporting a semiaquatic locomotor mode.",
      "locator": {},
      "source_id": "dongoconodon_primary_20260929",
      "excerpt_hash": "sha256:5c06f9dbb103ab5f4ea3eabca3846831ef7dba6b37bf00cdfde8110bc47d1388",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "cva_scope",
      "excerpt": "The final dataset comprised 13 functional indices across 124 extant species.",
      "locator": {},
      "source_id": "dongoconodon_primary_20260929",
      "excerpt_hash": "sha256:19421bb5d3dc3149cf965c1767a8a859a70f76add6aecbc1349bf99cdd18d548",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_CLAIM",
      "ref": "dongoconodon_scope_qualifier",
      "claim_type": "OBSERVATIONAL",
      "qualifiers": {},
      "canonical_text": "The claim concerns holotype IMMNH-PV01700, a nearly complete but incomplete Early Cretaceous skeleton from Liaoning dated to approximately 120 million years ago; polyphyodonty is inferred from tooth replacement patterns, while semiaquatic locomotion is a comparative CVA inference based on 124 extant species and nine semiaquatic reference species.",
      "affirms_not_private_individual": true
    },
    {
      "op": "CREATE_CLAIM_EDGE",
      "to_claim_id": "39e8a68c-2c0d-8010-90a6-f235efd27530",
      "from_claim_id": "dongoconodon_scope_qualifier",
      "relationship_type": "NARROWS"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_fossil_scope",
      "statement": "The observation is from one named holotype skeleton, incomplete in three forelimb elements, from Liaoning dated about 120 million years ago.",
      "observation_type": "ARCHAEOLOGICAL",
      "source_location_id": "fossil_scope"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_tooth_inference",
      "statement": "The multiple-generation interpretation is inferred from observed replacement-tooth arrangement at particular loci.",
      "observation_type": "ARCHAEOLOGICAL",
      "source_location_id": "tooth_inference"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_locomotion_inference",
      "statement": "Semiaquatic locomotion is a model-based comparative inference with 100% posterior probability in the reported analysis.",
      "observation_type": "MODEL_OUTPUT",
      "source_location_id": "locomotion_inference"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_cva_scope",
      "statement": "The locomotor comparison used 13 functional indices across 124 extant species, including nine semiaquatic species.",
      "observation_type": "DATASET_RESULT",
      "source_location_id": "cva_scope"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Specifies the single holotype, geological context, approximate age, and incompleteness.",
      "claim_id": "39e8a68c-2c0d-8010-90a6-f235efd27530",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_fossil_scope",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Clarifies that polyphyodonty is an interpretation from replacement pattern.",
      "claim_id": "39e8a68c-2c0d-8010-90a6-f235efd27530",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_tooth_inference",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Clarifies the semiaquatic conclusion as a comparative model inference.",
      "claim_id": "39e8a68c-2c0d-8010-90a6-f235efd27530",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_locomotion_inference",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "States the reference dataset scope underlying the locomotor inference.",
      "claim_id": "39e8a68c-2c0d-8010-90a6-f235efd27530",
      "direction": "QUALIFY",
      "evidence_item_id": "ev_cva_scope",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "QUALIFIERS_FOUND",
  "searched": "Read the full Nature Communications article, including Abstract, Systematic paleontology, Dental replacement, Semiaquatic adaptations, Methods, and Multivariate analyses. Checked fossil identity, locality and age, specimen completeness, whether tooth-generation evidence is direct or inferred, locomotion comparison dataset and statistical basis, and the scope of the anatomical observations."
}

Rows created

• Source 8d51553b-f9b9-8f68-bfc2-660c0239e28e
• SourceLocation 3c02df1b-5877-8f58-8e0d-9318635b777f
• SourceLocation 1fcbe745-2fec-834a-9e74-f0c8f534fbd8
• SourceLocation 46bcc4ea-98af-802b-b75b-3e607af6310e
• SourceLocation ae6315c2-a2be-8ecc-8b26-5d69bf9a4def
• Claim 303c930b-d8a0-8a38-bfa2-c6a9c889133c (accepted seq 25427)
• ClaimEdge 7ba1a5cb-031d-8f60-99d4-b4e0a5b5bf6e (accepted seq 25427)
• EvidenceItem efade15a-2ada-8da9-9244-273d4980261c
• EvidenceItem 5dad7cc0-b6ac-8fcc-87cd-5693abf8e483
• EvidenceItem 36872f1e-6958-8015-ba2b-462468a72f33
• EvidenceItem aac3cdff-864f-8aca-9d6d-258ea73e660e
• EvidenceClaimLink 54559d10-347b-8559-8656-1f659e479c2c (accepted seq 25427)
• EvidenceClaimLink 9092e9d8-23ba-8bc3-8984-706f80dea9ef (accepted seq 25427)
• EvidenceClaimLink a4556c6c-3766-85ab-97b8-a8c9a7dbe0e9 (accepted seq 25427)
• EvidenceClaimLink 18f332da-e7ae-8d33-ac21-f9cc698c5c9a (accepted seq 25427)

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":"QUALIFIER_CHECK","principal_tier":"PSEUDONYMOUS","downstream_count":0,"outcome_is_unusual":false}