Spain: Tiny Dinosaur Fossils Challenge Existing Theories

A groundbreaking discovery in Burgos province, Spain, has uncovered fossilized remains of a minuscule herbivorous ornithopod dinosaur—dubbed Foskeia pelendonum—that challenges global assumptions about dinosaur evolution. Named from Greek roots meaning ‘light’ and ‘to graze’, and honoring the ancient Pelendones tribe, the fossils belong to at least five individuals dating to the Early Cretaceous. Histological analysis confirms at least one was adult. Unique traits include an unusual dental arrangement and evidence of postural shifts during growth—likely adaptations for rapid movement through dense forests. Researchers emphasize its evolutionary sophistication: ‘Its tiny size does not imply simplification; this skull is bizarre and highly advanced,’ notes Dr. Marcos Besera. Others describe it as a ‘small key unlocking a lost 70-million-year chapter.’ Not a miniature Iguanodon, but a fundamentally distinct lineage. The study appears in Papers in Palaeontology.