Workflow
恐龙起源
icon
Search documents
巴西发现的化石或提供恐龙起源新线索
Xin Hua She· 2025-06-04 12:44
Core Insights - An international research team has identified a fossil in Brazil that may belong to one of the oldest dinosaur ancestors, providing new clues about dinosaur origins [1][2] - The fossil, approximately 237 million years old, was discovered in the city of Santa Cruz, Brazil, and is classified under the Silesauridae family, named "Itaguyra oculta" [1][2] Group 1 - The fossil analysis indicates that it consists of pelvic bones and belongs to a reptile from the mid-Triassic period, previously unrecognized [1] - The Silesauridae family is debated in its relationship to dinosaurs, with some considering it a close relative and others viewing it as a direct ancestor [2] - The research suggests that Silesauridae should be classified within the dinosaur category, specifically as an early representative of ornithischian dinosaurs [2] Group 2 - The discovery fills a critical gap in the evolutionary history of dinosaurs and supports the idea that Silesauridae may represent early ornithischian dinosaurs [2] - If the hypothesis is confirmed, "Itaguyra oculta" could be recognized as one of the oldest known dinosaurs in the world [2]