{
  "$type": "site.standard.document",
  "bskyPostRef": {
    "cid": "bafyreignngxoomrltw5otvrab2hz7sthtzetgbjq35bb45j25l4eg67pzq",
    "uri": "at://did:plc:k7h5fn3kdhjpj37pc6yhno2o/app.bsky.feed.post/3mjkvjxgq2uu2"
  },
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreic2f43bfy3scbhhnsujdfzjmzmryytipayxnnhrtczpknfbyp7z7y"
    },
    "mimeType": "image/jpeg",
    "size": 160125
  },
  "path": "/article/250-million-year-old-fossil-proves-mammal-ancestors-laid-eggs/",
  "publishedAt": "2026-04-15T14:15:00.000Z",
  "site": "https://www.scientificamerican.com",
  "textContent": "Laying eggs may have helped mammal ancestors thrive after Earth’s worst mass extinction",
  "title": "250-million-year-old fossil proves mammal ancestors laid eggs"
}