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Dinosaur evolution. A Jurassic ornithischian dinosaur from Siberia with both feathers and scales

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)451-5
Number of pages5
JournalScience
Volume345
Issue number6195
DOIs
DatePublished - 25 Jul 2014

Abstract

Middle Jurassic to Early Cretaceous deposits from northeastern China have yielded varied theropod dinosaurs bearing feathers. Filamentous integumentary structures have also been described in ornithischian dinosaurs, but whether these filaments can be regarded as part of the evolutionary lineage toward feathers remains controversial. Here we describe a new basal neornithischian dinosaur from the Jurassic of Siberia with small scales around the distal hindlimb, larger imbricated scales around the tail, monofilaments around the head and the thorax, and more complex featherlike structures around the humerus, the femur, and the tibia. The discovery of these branched integumentary structures outside theropods suggests that featherlike structures coexisted with scales and were potentially widespread among the entire dinosaur clade; feathers may thus have been present in the earliest dinosaurs.

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Copyright © 2014, American Association for the Advancement of Science.

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    Rights statement: This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Vol. 345 no. 6195 pp. 451-455, doi:10.1126/science.1253351

    Submitted manuscript, 320 KB, PDF document

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