{"$schema": "https://iptc.org/std/ninjs/ninjs-schema_3.2.json", "uri": "urn:newsml:wireva.mib.news:story:4816fda5-5eaa-41de-85a3-e77ed049355e", "type": "composite", "version": "1", "versioncreated": "2026-09-12T21:01:09.069268Z", "firstcreated": "2026-09-12T21:01:09.069268Z", "pubstatus": "usable", "language": "en", "headline": "10,000-Year-Old Mastodon Tooth Found in California", "description_text": "A geomorphologist working at a San Mateo County preserve discovered a fossilized Pacific mastodon molar in immaculate condition, offering a rare window into Ice Age life in the Bay Area.", "associations": {"item-0": {"$schema": "https://iptc.org/std/ninjs/ninjs-schema_3.2.json", "uri": "urn:newsml:wireva.mib.news:item:c84b0be6-2d9a-4c6e-8ae3-7671dd229a93", "type": "text", "profile": "standard", "version": "1", "versioncreated": "2026-09-12T21:02:17.737016Z", "firstcreated": "2026-09-12T21:01:09.069268Z", "pubstatus": "usable", "urgency": 5, "language": "en", "headline": "10,000-Year-Old Mastodon Tooth Found in California", "byline": "Jordan Quincy", "located": "United States", "copyrightholder": "Haydamax OÜ", "copyrightnotice": "Wireva / Science Official", "usageterms": "Subscribers may republish this item in full, including translation and trimming, with the credit “Wireva / Science Official”. Set rel=canonical to https://scienceofficial.org/archaeology/10000-year-old-mastodon-tooth-found-in-california/ when publishing on the web.", "description_text": "A geomorphologist working at a San Mateo County preserve discovered a fossilized Pacific mastodon molar in immaculate condition, offering a rare window into Ice Age life in the Bay Area.", "altids": {"mosaic": "c84b0be6-2d9a-4c6e-8ae3-7671dd229a93", "story": "4816fda5-5eaa-41de-85a3-e77ed049355e", "slug": "10000-year-old-mastodon-tooth-found-in-california"}, "subject": [{"name": "Science", "rel": "direct", "literal": "science", "code": "medtop:13000000", "scheme": "http://cv.iptc.org/newscodes/mediatopic/", "uri": "http://cv.iptc.org/newscodes/mediatopic/13000000"}], "place": [{"name": "United States", "literal": "us", "code": "US", "scheme": "http://cv.iptc.org/newscodes/countrycodes/"}], "person": [], "organisation": [], "genre": [{"name": "Standard story", "literal": "standard"}], "service": [{"name": "Wireva", "literal": "wireva"}], "associations": {"featuremedia": {"uri": "urn:newsml:wireva.mib.news:media:3d7873bd-8a8c-42e4-bf8d-cd32b02867f4", "type": "picture", "version": "1", "pubstatus": "usable", "headline": "'Oddly shaped rock' unearthed in California turns out to be 'immaculate' mastodon molar", "description_text": "10,000-Year-Old Mastodon Tooth Found in California", "copyrightholder": "livescience.com", "copyrightnotice": "'Oddly shaped rock' unearthed in California turns out to be 'immaculate' mastodon molar", "usageterms": "Picture belongs to the source publication: address and terms are delivered, the file is not.", "altids": {"wireva": "3d7873bd-8a8c-42e4-bf8d-cd32b02867f4"}, "extra": {"wireva:delivery_mode": "link_only", "wireva:rights": {"licence": "", "licence_url": "", "licence_raw": "Related RSS source", "licence_verified_at": "2026-09-12T21:02:17.757015Z", "attribution_required": true, "attribution_text": "'Oddly shaped rock' unearthed in California turns out to be 'immaculate' mastodon molar", "redistribution_allowed": false, "commercial_use_allowed": false, "modifications_allowed": false, "share_alike_required": false}, "wireva:provenance": {"creator": "", "source_name": "livescience.com", "source_url": "https://www.livescience.com/animals/extinct-species/oddly-shaped-rock-unearthed-in-california-turns-out-to-be-immaculate-mastodon-molar", "source_page_url": "https://www.livescience.com/animals/extinct-species/oddly-shaped-rock-unearthed-in-california-turns-out-to-be-immaculate-mastodon-molar", "our_page_url": "https://scienceofficial.org/archaeology/10000-year-old-mastodon-tooth-found-in-california/"}, "wireva:role": "lead"}, "renditions": {"source": {"href": "https://www.livescience.com/animals/extinct-species/oddly-shaped-rock-unearthed-in-california-turns-out-to-be-immaculate-mastodon-molar", "mimetype": "image/jpeg"}}}}, "extra": {"wireva:story": {"uri": "urn:newsml:wireva.mib.news:story:4816fda5-5eaa-41de-85a3-e77ed049355e", "slug": "10000-year-old-mastodon-tooth-found-in-california-20260912", "status": "developing", "languages": ["en"], "item_count": 1, "is_breaking": false}, "wireva:rights": {"class": "agency_original", "redistribution_allowed": true, "commercial_use_allowed": true, "modifications_allowed": true, "share_alike_required": false, "attribution_required": true, "attribution_text": "Wireva / Science Official", "canonical_required": true, "canonical_url": "https://scienceofficial.org/archaeology/10000-year-old-mastodon-tooth-found-in-california/", "linkback_required": true, "licence": "Wireva subscriber licence", "licence_url": "", "licensor": "Haydamax OÜ", "valid_until": null, "excerpt_max_chars": 0, "decided_by_rule": "agency_original_unassessed_allow", "needs_review": true}, "wireva:provenance": {"production_method": "automated", "ai_stages": {"editing": true, "drafting": true, "headline": true, "discovery": true, "classification": true, "image_selection": true, "source_collection": true, "cross_source_comparison": true}, "model": "", "human_reviewed": false, "reviewed_by": "", "reviewed_at": null, "editorial_control": true, "editorial_responsibility": "Haydamax OÜ (Wireva)", "factchecked": false, "verification_status": "multi_source", "independent_confirmations": 1, "official_source_used": false, "used_press_release": false, "public_interest": false, "ai_disclosure_required": false, "ai_disclosure_text": "", "independence_check": {"status": "not_assessed", "score": 0.0, "checked_at": "2026-09-12T21:02:17.753638Z"}, "sources": [{"url": "https://www.theguardian.com/us-news/2026/sep/12/fossilized-mastodon-tooth-10000-years-found-california", "title": "'Oddly shaped rock' unearthed in California turns out to be 'immaculate' mastodon molar", "publisher": "theguardian.com", "type": "rss", "role": "primary", "official": false, "retrieved_at": "2026-09-12T21:02:17.743134Z", "published_at": "2026-09-11T17:11:48Z"}, {"url": "https://www.livescience.com/animals/extinct-species/oddly-shaped-rock-unearthed-in-california-turns-out-to-be-immaculate-mastodon-molar", "title": "", "publisher": "livescience.com", "type": "rss", "role": "supporting", "official": false, "retrieved_at": "2026-09-12T21:02:17.739790Z", "published_at": null}]}, "wireva:publication": {"name": "Science Official", "domain": "scienceofficial.org", "country": "US", "url": "https://scienceofficial.org/archaeology/10000-year-old-mastodon-tooth-found-in-california/"}, "wireva:links": {"self": "https://wireva.mib.news/api/v1/items/c84b0be6-2d9a-4c6e-8ae3-7671dd229a93", "html": "https://wireva.mib.news/item/c84b0be6-2d9a-4c6e-8ae3-7671dd229a93/10000-year-old-mastodon-tooth-found-in-california/", "story": "https://wireva.mib.news/story/10000-year-old-mastodon-tooth-found-in-california-20260912/"}, "wireva:metrics": {"word_count": 422, "char_count": 2772, "reading_time_seconds": 198}}}}, "extra": {"wireva:languages": ["en"], "wireva:status": "developing", "wireva:item_count": 1}}