An Early Ostrich Dinosaur and Implications for Ornithomimosaur Phylogeny

By Q. Ji, M. Norell, P. Makovicky, K. Gao, S. Ji, Chong-xi Yuan. 2003

128 citations recorded by the source corpus.

Abstract A new ornithomimosaur from the Yixian Formation of Liaoning Province People's Republic of China is described. These beds are near the Jurassic-Cretaceous boundary. This specimen is interesting because it has several primitive characters for ornithomimosaurs such as teeth and a short first metacarpal. This taxon is placed in a phylogenetic analysis of Coelurosauria and shown to be near the base of the ornithomimosaur clade. Using this phylogeny we comment on the biogeographic history of this group.

Subfields: Nature and Landscape Conservation, Paleontology

View Paper: https://www.semanticscholar.org/paper/c1a88c21a23c0600efdb65b3ba778cab87eb91e8

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In Nature and Landscape Conservation

1. M. Norell
2. A. Turner
3. P. Makovicky
4. O. Mateus
5. R. Araújo
6. Christophe Hendrickx
7. J. Choiniere
8. Zhonghe Zhou

In Paleontology

1. M. Norell
2. A. Turner
3. P. Makovicky
4. O. Mateus
5. J. Choiniere
6. R. Araújo
7. Christophe Hendrickx
8. Zhonghe Zhou

Citations in the corpus

• The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends (2019, background): “Unserrated teeth are present in the whole dentition of: the noasaurid Limusaurus [Wang et al.'s (2017a) data matrix]; spinosaurines such as Irritator (Sues et al., 2002; Figure 11.3), Angaturama (Kellner and Campos, 1996), and Spinosaurus (Stromer, 1915); the neocoelurosaur Fukuivenator (Azuma et al”
• Reexamination of a primitive ornithomimosaur, Garudimimus brevipes Barsbold, 1981 (Dinosauria: Theropoda), from the Late Cretaceous of Mongolia (2005, background): “…ornithomimosaurs include four genera (Pelecanimimus, Shenzhousaurus, Harpymimus, and Garudimimus), and these are toothed and are known from the Early Cretaceous except for Garudimimus (toothless and Late Cretaceous) (Barsbold and Perle 1984; Pérez-Moreno et al. 1994; Ji et al. 2003).”
• A Review of Dromaeosaurid Systematics and Paravian Phylogeny (2012, background): “, 2002; Makovicky et al., 2003; Xu and Norell, 2004). Senter et al. (2004) recovers Adasaurus mongoliensis as the sister group to a clade containing Dromaeosaurus, Utahraptor, Achillobator, Deinonychus, and Saurornitholestes.”
• Evolutionary radiation of the Jehol Biota: chronological and ecological perspectives (2006, background): “Many of these herbivorous dinosaurs also display structural specializations as seen, for instance, in Caudipteryx that has robust, short and high jaws with much reduced teeth, and nearly all specimens currently known have gizzard stones (Ji et al. 1998; Zhou and Wang 2000; Ji et al. 2003).”
• New information on Nqwebasaurus thwazi, a coelurosaurian theropod from the Early Cretaceous Kirkwood Formation in South Africa (2012, background): “Unlike most other ornithomimosaurs, except for Shenzhousaurus (Ji et al., 2003) and Harpymimus (IGM 100/ 23), there is no evidence for a secondary maxillary fenestra located dorsal to first (this fenestra is called the ‘‘promaxillary fenestra’’ by Kobayashi and Barsbold [2005b], but we wish to avoid”
• Non‐avian dinosaur fossils from the Lower Cretaceous Jehol Group of western Liaoning, China (2006, background): “It is an ornithomimosaur that is more primitive than all other known species except Pelecanimimus polyodon (Perez-Moreno et al. 1994; Ji et al. 2003).”
• A juvenile specimen of a new coelurosaur (Dinosauria: Theropoda) from the Middle–Late Jurassic Shishugou Formation of Xinjiang, People's Republic of China (2014, background): “Within Coelurosauria, serrations are absent on the teeth of avialans (e.g., Archaeopteryx: Elzanowski & Wellnhofer 1996), many troodontids (Makovicky & Norell 2004), basal ornithomimosaurs (e.g., Pelecanimimus: Perez-Moreno et al. 1994; Shenzhousaurus: Ji et al. 2003; and Harpymimus: Kobayashi & Bar”
• Cretaceous tetrapod fossil record sampling and faunal turnover: Implications for biogeography and the rise of modern clades (2013, unknown): “, 2004) andornithomimosaurs (Pérez-Moreno et al., 1994; Ji et al., 2003).”
• AXIAL SKELETON ONTOGENY IN THE PARASUCHIA (ARCHOSAURIA: PSEUDOSUCHIA) AND ITS IMPLICATIONS FOR ONTOGENETIC DETERMINATION IN ARCHOSAURS (2007, background): “All of the neurocentral sutures in the basal ornithomimosaur Shenzhousaurus from the Cretaceous of China are open (Ji et al., 2003).”