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Tiny Spanish Dinosaur Named Foskeia Pelendonum Prompts Provisional Rethink of Plant-Eater Family Tree

The paper highlights a chicken-sized adult with an unusually derived skull that grounds new testable phylogenetic results.

Overview

  • The peer-reviewed description in Papers in Palaeontology names Foskeia pelendonum from Early Cretaceous deposits at the Vegagete site in Burgos, Spain.
  • Fossils from at least five individuals include newly recovered cranial elements scanned and 3D reconstructed, enabling a formal diagnosis based on distinctive teeth and jaw features.
  • Bone microstructure shows the largest specimen was a sexually mature small-bodied adult with relatively fast growth and a metabolism approaching that of small birds or mammals.
  • Phylogenetic analysis places Foskeia within Rhabdodontomorpha as sister to Australia's Muttaburrasaurus, expanding the European clade Rhabdodontia.
  • The dataset also revives support for a Phytodinosauria grouping and points to specialized feeding and growth-related posture shifts, with authors emphasizing these signals need further testing.