Chicken-sized oviraptorid dinosaurs from central China and their ontogenetic implications
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Abstract
Oviraptorids are a group of specialized non-avian theropod dinosaurs that were generally one to 8 m in body length. New specimens of baby oviraptorids from the Late Cretaceous of Henan Province are some of the smallest individuals known. They include diagnostic characters such as the relative position of the antorbital fenestra and the external naris, distinct opening in the premaxilla anteroventral to the external naris, antorbital fossa partly bordered by premaxilla posterodorsally, lacrimal process of premaxilla does not contact the anterodorsal process of the lacrimal, parietal almost as long as frontal; in dorsal view, posterior margin forms a straight line between the postzygapophyses in each of the fourth and fifth cervicals; femur longer than ilium. They also elucidate the ontogenetic processes of oviraptorids, including fusion of cranial elements and changes in relative body proportions. Hind limb proportions are constant in oviraptorids, regardless of absolute body size or ontogenetic stage. This suggests a sedentary lifestyle that did not involve the pursuit of similar-sized prey. The functional implications for bite force and therefore dietary preferences are better understood through the study of such small animals. The comparison of the measurements of 115 skeletons indicates that oviraptorids maintain their hind limb proportions regardless of ontogenetic stage or absolute size, which is a pattern seen more commonly in herbivores than in carnivores. This may weakly support the hypothesis that oviraptorids are herbivores rather than active carnivores.
Keywords
Baby oviraptorid Yulong Late Cretaceous Henan ProvinceNotes
Acknowledgments
We thank Yoshitsugu Kobayashi (Hokkaido University Museum, Hokkaido University, Japan) for making the thin section of the rib of HGM 41HIII-0107. Eva Koppelhus provided support for measuring and photographing the specimens. This study was supported by Natural Science Foundation of China grants (41272022; 40872017), and the study of dinosaur faunas from western and southern Henan Province (2006).
Supplementary material
References
- Barsbold R (1976) On a new Late Cretaceous family of small theropods (Oviraptoridae fam. n.) of Mongolia. Doklady Akademia Nauk SSSR 226(3):685–688, in RussianGoogle Scholar
- Barsbold R, Maryanska T, Osmólska H (1990) Oviraptorosauria. In Weishampel DB, Dodson P, Osmólska H (eds) The Dinosauria, 1st ed. Univ. of California Press, Berkeley, pp 249–258Google Scholar
- Barsbold R, Osmólska H, Watabe M, Currie PJ, Tsogtbaatar K (2000) A new oviraptorosaur (dinosaur, theropod) from Mongolia: the first dinosaur with a pygostyle. Acta Palaeontol Polonica 45:97–106Google Scholar
- Benson RBJ, Butler RJ, Carrano MT, O’Connor PM (2011) Air-filled postcranial bones in theropod dinosaurs: physiological implications and the ‘reptile’–bird transition. Biol Rev 87:168–193PubMedCrossRefGoogle Scholar
- Bureau of Geology and Mineral Resources of Henan Province (1989) Regional Geology of Henan Province. Geological Publishing House, Beijing, pp 1–772Google Scholar
- Campione NE and Evans DC (2012) A universal scaling relationship between body mass and proximal limb bone dimensions in quadrupedal terrestrial tetrapods. BMC Biology 10:60. http://www.biomedcentral.com/1741-7007/10/60 Google Scholar
- Carpenter K (1982) Baby dinosaurs from the Late Cretaceous Lance and Hell Creek formations and a description of a new species of theropod. Contrib Geol Univ Wyoming 20:123–134Google Scholar
- Christiansen P (1999) Long bone scaling and limb posture in non-avian theropods: evidence for differential allometry. J Paleontol 19:666–680Google Scholar
- Clark JM, Norell MA, Chiappe LM (1999) An oviraptorid skeleton from the late Cretaceous of Ukhaa Tolgod, Mongolia, preserved in an avian-like brooding position over an oviraptorid nest. Am Mus Novit 3265:1–36Google Scholar
- Clark JM, Norell MA, Barsbold R (2001) Two new oviraptorids (Theropoda: Oviraptorosauria), Upper Cretaceous Djadokhta Formation, Ukhaa Tolgod, Mongolia. J Vert Paleontol 21(2):209–213CrossRefGoogle Scholar
- Clark JM, Norell MA, Rowe T (2002) Cranial anatomy of Citipati osmolskae (Theropoda, Oviraptorosauria), and a reinterpretation of the holotype of Oviraptor philoceratops. Am Mus Novit 3364:1–24CrossRefGoogle Scholar
- Coria RA, Currie PJ (2006) A new carcharodontosaurid (Dinosauria: Theropoda) from the Upper Cretaceous of Argentina. Geodiversitas 28:71–118Google Scholar
- Cracraft J (1971) Caenagnathiformes: Cretaceous birds convergent in jaw mechanism to dicynodont reptiles. J Paleontol 45:805–809Google Scholar
- Currie PJ (1978) The orthometric linear unit. Journal of Paleontology 52:964–971Google Scholar
- Currie PJ (1985) Cranial anatomy of Stenonychosaurus inequalis (Saurischia, Theropoda) and its bearing on the origin of birds. Can J Earth Sci 22:1643–1658CrossRefGoogle Scholar
- Currie PJ (2003a) Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada. Acta Palaeontol Polonica 48(2):191–226Google Scholar
- Currie PJ (2003b) Allometric growth in tyrannosaurids (Dinosauria: Theropoda) from the Upper Cretaceous of North America and Asia. Can J Earth Sci 40:651–665CrossRefGoogle Scholar
- Currie PJ, Russell DA (1988) Osteology and relationships of Chirostenotes (Saurischia, Theropoda) from the Judith River (Oldman) Formation of Alberta, Canada. Can J Earth Sci 25:972–986Google Scholar
- Currie PJ, Zhao XJ (1993) A new large theropod (Dinosauria, Theropoda) from the Jurassic of Xinjiang, People’s Republic of China. Can J Earth Sci 30:2037–2081CrossRefGoogle Scholar
- Currie PJ, Godfrey SJ, Nessov L (1993) New caenagnathid (Dinosauria: Theropoda) specimens from the Upper Cretaceous of North America and Asia. Can J Earth Sci 30:2255–2272CrossRefGoogle Scholar
- Farlow JO, Hurlburt GR, Elsey RM, Britton AC, Langston WJR (2005) Femoral dimensions and body size of Alligator mississippiensis: estimating the size of extinct Mesoeucrocodylians. J Vertebr Paleontol 25(2):354–369CrossRefGoogle Scholar
- He T, Zhou ZH, Wang XL (2008) A new genus and species of caudipterid dinosaur from the Lower Cretaceous Jiufotang Formation of western Liaoning, China. Vertebrata PalAsiatica 46(3):178–189Google Scholar
- Holtz TR (1994) The arctometatarsalian pes, an unusual structure of the metatarsus of Cretaceous theropoda (Dinosauria: Saurischia). J Vertebr Paleontol 14:480–519CrossRefGoogle Scholar
- Horner JR, Makela R (1979) Nest of juveniles provides evidence of family structure among dinosaurs. Nature 282:296–298CrossRefGoogle Scholar
- Ji Q, Currie PJ, Norrell MA, Ji SA (1998) Two feathered dinosaurs from northeastern China. Nature 393:753–761CrossRefGoogle Scholar
- Longrich NR, Currie PJ, Dong ZM (2010) A new oviraptorid (Dinosauria: Theropoda) from the Upper Cretaceous of Bayan Mandahu, Inner Mongolia. Palaeontology 53:945–960CrossRefGoogle Scholar
- Lü JC (2002) A new oviraptorosaurid (Theropoda: Oviraptorosauria) from the Late Cretaceous of southern China. J Vertebr Paleontol 22(4):871–875Google Scholar
- Lü JC, Tomida Y, Azuma Y, Dong ZM, Lee YN (2004) New oviraptorid dinosaur (Dinosauria: Oviraptorosauria) from the Nemegt Formation of southwestern Mongolia. Bull Natl Sci Mus, Tokyo, Ser C 30:95–130Google Scholar
- Lü JC, Tomida Y, Azuma Y, Dong ZM, Lee YN (2005) Nemegtomaia gen. nov., a new generic name for the oviraptorosaurian dinosaur Nemegtia Lü et al., 2004. Bulletin of the National Science Museum, Tokyo, Ser. C 31:51Google Scholar
- Lü JC, Zhang BK (2005) A new oviraptorid (Theropod: Oviraptorosauria) from the Upper Cretaceous of the Nanxiong Basin, Guangdong Provinces of southern China. Acta Palaeontol Sinica 44(3):412–422Google Scholar
- Lü JC, Xu L, Jiang XJ, Jia SH, Li M, Yuan CX, Zhang XL, Ji Q (2009) A preliminary report on the new dinosaurian fauna from the Cretaceous of the Ruyang Basin, Henan Province of central China. J Paleontol Soci Korea 25(1):43–56Google Scholar
- Lü JC, Xu L, Zhang XL, Ji Q, Jia SH, Hu WY, Zhang JM, Wu YH (2007) New dromaesoaurid dinosaur from the Late Cretaceous Qiupa Formation of Luanchuan area, western Henan, China. Geo Bull China 26(7):777–786Google Scholar
- Lü JC (2005) Oviraptorid dinosaurs from southern China. Geological Publishing House, Beijing, pp. 208Google Scholar
- Lü JC, Dong ZM, Azuma Y, Barsbold R, Tomida Y (2002) Oviraptorosaurs compared to birds. In: Z. Zhou, F. Zhang (eds) Proceedings of the 5th Symposium of the Society of Avian Paleontology and Evolution, Science Press, pp 175–189Google Scholar
- Makovicky PJ, Sues HD (1998) Anatomy and phylogenetic relationships of the theropod dinosaur Microvenator celer from the Lower Cretaceous of Montana. Am Mus Novit 3240:1–27Google Scholar
- Norell MA, Clark JM, Dashzeveg D, Barsbold R, Chiappe LM, Davidson AR, Mckenna MC, Perle A, Novacek MJ (1994) A theropod dinosaur embryo and the affinities of the Flaming Cliffs Dinosaur eggs. Science 266:779–782PubMedCrossRefGoogle Scholar
- Norell MA, Clark JM, Chiappe LM, Dashzeveg D (1995) A nesting dinosaur. Nature 378:774–776CrossRefGoogle Scholar
- Osborn HF (1924) Three new Theropoda, Protoceratops zone, central Mongolia. Am Mus Novit 144:1–12Google Scholar
- Osmólska H (1976) New light on the skull anatomy and systematic position of Oviraptor. Nature 262:683–684CrossRefGoogle Scholar
- Osmólska H, Currie PJ, Barsbold R (2004) In: Weishampel DB, Dodson P, Osmólska H (eds) The Dinosauria, 2nd edn. University of California Press, Berkeley, pp 165–183CrossRefGoogle Scholar
- Ostrom JH (1961) Cranial morphology of the hadrosaurian dinosaurs of North America. Bull Am Mus Nat Hist 122(2):33–186Google Scholar
- Ostrom JH (1964) A functional analysis of jaw mechanics in the dinosaur Tricceratpos. Postilla 88:1–35Google Scholar
- Ostrom JH (1966) Functional morphology and evolution of the ceratoposian dinosaurs. Evolution 20:290–308CrossRefGoogle Scholar
- Rosenberg DS, Dodson P (1996) An allometric analysis of dinosaur skeletons. J Vertebr Paleontol 16:61AGoogle Scholar
- Russell DA (1970) Tyrannosaurs from the Late Cretaceous of western Canada. National Museum of Natural Sciences, Publications in Palaeontology 1:1–34Google Scholar
- Smith D (1992) The type specimen of Oviraptor philoceratops, a theropod dinosaur from the Upper Cretaceous of Mongolia. Neues Jahrbuch für Paläontology und Geologie, Abhandlungen 186(3):365–388Google Scholar
- Snively E, Henderson DM, Phillips DS (2006) Fused and vaulted nasals of tyrannosaurid dinosaurs: Implications for cranial strength and feeding mechanics. Acta Palaeontologica Polonica 51(3):435–454Google Scholar
- Sternberg RM (1940) A toothless bird from the Cretaceous of Alberta. J Paleontol 14(1):81–85Google Scholar
- Sues HD (1997) On Chirostenotes, a Late Cretaceous oviraptorosaur (Dinosauria: Theropoda) from western North America. J Vertebr Paleontol 17:698–716CrossRefGoogle Scholar
- Swofford DL (2002) Paup*. Phylogenetic analysis using parsimony (*and other methods). Sinauer Associates, SunderlandGoogle Scholar
- Wood BA (1979) Relationship between body size and long bone lengths in Pan ang Gorilla. Am J Phys Anthropol 50(1):23–25CrossRefGoogle Scholar
- Wu XC, Russell AP (1997) Functional morphology. In: Currie PJ, Padian K (eds) Encyclopedia of dinosaurs. Academic Press, San Diego, pp 258–268Google Scholar
- Xu X, Cheng YN, Wang XL, Chang CH (2002) An unusual oviraptorosaurian dinosaur from China. Nature 419:291–293PubMedCrossRefGoogle Scholar
- Xu X, Tan QW, Wang JM, Zhao XJ, Tan L (2007) A gigantic bird-like dinosaur from the Late Cretaceous of China. Nature 447:844–847PubMedGoogle Scholar
- Xu X, Han FL (2010) A new oviraptorid dinosaur (Theropoda: Oviraptorosauria) from the Upper Cretaceous of China. Vertebr PalAsia 48:11–18Google Scholar