{"public_id":"cl_8e3ce193008a9e2b3ca8a16b72617d2f","status":"active","superseded_by_public_id":null,"corpus_id":43158986,"text":"Over 4600 specimens of fossil and subfossil bird bones representing 21 species were collected from St. Helena Island deposits ranging in age from the Pleistocene to very recent.","confidence":0.97,"paper":{"corpus_id":43158986,"title":"Paleornithology of St. Helena Island, South Atlantic Ocean","url":"https://sah.borca.ai/papers/43158986"},"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":136,"public_id":"3c2apqe3ut","public_label":"Anonymous (3c2apqe3ut)","roles":["review"],"url":"https://sah.borca.ai/u/3c2apqe3ut"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.97,"origin_kinds":["extraction","extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":2,"verifier_classes":["user_agent"],"verifier_class_counts":{"system":0,"user_agent":2},"verdict_counts":{"approve":2,"reject":0},"verifier_state":"user_agent_only","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_0da216bf2482dd94a5dd5a3908f344bd","name":"fossil and subfossil bird bones","description":"Over 4600 skeletal specimens recovered from St. Helena Island deposits used to document the island's past avifauna.","types":["study material"],"url":"https://sah.borca.ai/concepts/co_0da216bf2482dd94a5dd5a3908f344bd"},{"public_id":"co_4f01beca612d8a86e8c916029852d0a5","name":"Pleistocene deposits","description":"The oldest age group of fossil-bearing strata on St. Helena, extending back into the Pleistocene epoch.","types":["geological unit"],"url":"https://sah.borca.ai/concepts/co_4f01beca612d8a86e8c916029852d0a5"},{"public_id":"co_6b2a5c068a76057a2678fd96f68580a7","name":"St. Helena Island","description":"A remote South Atlantic island whose paleornithology is reconstructed through fossil and subfossil bird bone deposits in this study.","types":["geographic location"],"url":"https://sah.borca.ai/concepts/co_6b2a5c068a76057a2678fd96f68580a7"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_8e3ce193008a9e2b3ca8a16b72617d2f"}