The beaks of ostrich dinosaurs

Mark A. Norell (), Peter J. Makovicky and Philip J. Currie
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Mark A. Norell: American Museum of Natural History
Peter J. Makovicky: American Museum of Natural History
Philip J. Currie: Royal Tyrell Museum of Palaeontology

Nature, 2001, vol. 412, issue 6850, 873-874

Abstract: Abstract Primitive ornithomimids, a ubiquitous group of specialized Cretaceous dinosaurs nested within a clade of predominantly carnivorous theropods, are known to have had teeth, whereas derived ornithomimids had an edentulous beak, which has prompted speculation about their dietary habits1. Here we describe two new ornithomimid specimens in which soft-tissue structures of the beak have been preserved. These creatures probably used their beaks to strain food sediment in an aqueous environment, rather than for predation on large animals.

Date: 2001
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DOI: 10.1038/35091139

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