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A new clade of archaic large-bodied predatory dinosaurs (Theropoda: Allosauroidea) that survived to the latest Mesozoic

Abstract

Non-avian theropod dinosaurs attained large body sizes, monopolising terrestrial apex predator niches in the Jurassic–Cretaceous. From the Middle Jurassic onwards, Allosauroidea and Megalosauroidea comprised almost all large-bodied predators for 85 million years. Despite their enormous success, however, they are usually considered absent from terminal Cretaceous ecosystems, replaced by tyrannosaurids and abelisaurids. We demonstrate that the problematic allosauroids Aerosteon, Australovenator, Fukuiraptor and Neovenator form a previously unrecognised but ecologically diverse and globally distributed clade (Neovenatoridae, new clade) with the hitherto enigmatic theropods Chilantaisaurus, Megaraptor and the Maastrichtian Orkoraptor. This refutes the notion that allosauroid extinction pre-dated the end of the Mesozoic. Neovenatoridae includes a derived group (Megaraptora, new clade) that developed long, raptorial forelimbs, cursorial hind limbs, appendicular pneumaticity and small size, features acquired convergently in bird-line theropods. Neovenatorids thus occupied a 14-fold adult size range from 175 kg (Fukuiraptor) to approximately 2,500 kg (Chilantaisaurus). Recognition of this major allosauroid radiation has implications for Gondwanan paleobiogeography: The distribution of early Cretaceous allosauroids does not strongly support the vicariant hypothesis of southern dinosaur evolution or any particular continental breakup sequence or dispersal scenario. Instead, clades were nearly cosmopolitan in their early history, and later distributions are explained by sampling failure or local extinction.

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References

  • Alcober O, Sereno PC, Larsson HCE, Martinez RN, Varicchio DJ (1998) A Late Cretaceous carcharodontosaurid (Theropoda: Allosauroidea) from Argentina. J Vertebr Paleontol 18:23A

    Google Scholar 

  • Anderson JF, Hall-Martin A, Russell DA (1985) Long-bone circumference and weight in mammals, birds and dinosaurs. Zool J Linn Soc-Lond 207:53–61

    Google Scholar 

  • Azuma Y, Currie PJ (1995) A new giant dromaeosaurid from Japan. J Vertebr Paleontol 15:17A

    Google Scholar 

  • Azuma Y, Currie PJ (2000) A new carnosaur (Dinosauria: Theropoda) from the Lower Cretaceous of Japan. Can J Earth Sci 37:1735–1753

    Article  Google Scholar 

  • Bakker RT, Siegwarth J, Kralis D, Filla J (1992) Edmarka rex, a new, gigantic theropod dinosaur from the middle Morrison Formation, Late Jurassic of the Como Bluff outcrop region. Hunteria 2:1–24

    Google Scholar 

  • Benson RBJ (2009) A description of Megalosaurus bucklandii (Dinosauria: Theropoda) from the Bathonian of the United Kingdom and the relationships of Middle Jurassic theropods. Zool J Linn Soc-Lond (in press)

  • Benson RBJ, Xu X (2008) The anatomy and systematic position of the theropod dinosaur Chilantaisaurus tashuikouensis Hu, 1964 from the Early Cretaceous of Alanshan, People’s Republic of China. Geol Mag 145:778–789

    Article  Google Scholar 

  • Brusatte SL, Sereno PC (2008) Phylogeny of Allosauroidea (Dinosauria: Theropoda): comparative analysis and resolution. J Syst Palaeontol 6:155–182

    Article  Google Scholar 

  • Brusatte SL, Benson RBJ, Hutt S (2008) The osteology of Neovenator salerii (Dinosauria: Theropoda) from the Wealden Group (Barremian) of the Isle of Wight. Pal Soc Monogr 162:1–75

    Google Scholar 

  • Brusatte SL, Benson RBJ, Chure DJ, Xu X, Sullivan C, Hone DWE (2009) The first definitive carcharodontosaurid (Dinosauria: Theropoda) from Asia and the delayed ascent of tyrannosaurids. Naturwissenschaften 96:1051–1058

    Article  CAS  PubMed  Google Scholar 

  • Calvo JO, Porfiri JD, Veralli C, Novas FE, Poblete F (2004) Phylogenetic status of Megaraptor namunhuaiquii Novas based on a new specimen from Neuquén, Patagonia, Argentina. Ameghiniana 41:565–575

    Google Scholar 

  • Carrano MT (1999) What, if anything, is a cursor? Categories versus continua for determining locomotor habit in mammals and dinosaurs. J Zool 247:29–42

    Article  Google Scholar 

  • Carrano MT, Sampson SD (2008) The phylogeny of Ceratosauria (Dinosauria: Theropoda). J Syst Palaeontol 6:183–236

    Article  Google Scholar 

  • Charig AJ, Milner AC (1997) Baryonyx walkeri, a fish-eating dinosaur from the Wealden of Surrey. Bull Nat Hist Mus Geol 53:11–70

    Google Scholar 

  • Currie PJ, Azuma Y (2006) New specimens, including a growth series, of Fukuiraptor (Dinosauria, Theropoda) from the Lower Cretaceous Kitadani Quarry of Japan. J Paleont Soc Korea 22:173–193

    Google Scholar 

  • Erickson GM, Makovicky PJ, Currie PJ, Norrell MA, Yerby SA, Brochu CA (2004) Gigantism and comparative life-history parameters of tyrannosaurid dinosaurs. Nature 430:772–775

    Article  CAS  PubMed  Google Scholar 

  • Gauthier JA (1986) Saurischian monophyly and the origin of birds. Mem Calif Acad Sci 8:1–55

    Google Scholar 

  • Harris JD (1998) Reanalysis of Acrocanthosaurus atokensis, its phylogenetic status, and implications, based on a new specimen. New Mex Mus Nat Hist Sci Bull 13:1–75

    Google Scholar 

  • Hocknull SA, White MA, Tischler TR, Cook AG, Calleja ND, Sloan T, Elliott DA (2009) New mid-Cretaceous (latest Albian) dinosaurs from Winton, Queensland, Australia. PLoS ONE 4(7):1–51

    Article  Google Scholar 

  • Holtz TR Jr (1995) The arctometatarsalian pes, an unusual structure of the metatarsus of Cretaceous Theropoda (Dinosauria: Saurischia). J Vertebr Paleontol 14:480–519

    Google Scholar 

  • Holtz TR Jr, Molnar RE, Currie PJ (2004) Basal Tetanurae. In: Weishampel DB, Dodson P, Osmólska H (eds) The Dinosauria, 2nd edn. University of California Press, Berkeley, pp 71–110

    Google Scholar 

  • Hu SY (1964) Carnosaurian remains from Alashan, Inner Mongolia. Vertebrat PalAsiat 8:42–63 In Chinese, with English summary

    Google Scholar 

  • Hutt S, Martill DM, Barker MJ (1996) The first European allosaurid dinosaur (Lower Cretaceous, Wealden Group, England). Neues Jahrb Geol Pal M 1996:635–644

    Google Scholar 

  • Marsh OC (1878) Principal characters of American Jurassic dinosaurs. Part 1. Am J Sci (series 3) 16:411–416

    Google Scholar 

  • Marsh OC (1881) Classification of the Dinosauria. Am J Sci (series C) 23:241–244

    Google Scholar 

  • Molnar RE, Flannery TF, Rich THV (1981) An allosaurid theropod dinosaur from the Early Cretaceous of Victoria, Australia. Alcheringa 5:141–146

    Article  Google Scholar 

  • Naish D, Hutt S, Martill DM (2001) Saurischian dinosaurs 2: theropods. Palaeontol Assoc Field Guides Foss 10:242–309

    Google Scholar 

  • Novas FE (1998) Megaraptor namunhuaiquii, gen. et sp. nov., a large-clawed, Late Cretaceous theropod from Patagonia. J Vertebr Paleontol 18:4–9

    Google Scholar 

  • Novas FE, Ezcurra MD, Lecuona A (2008) Orkoraptor burkei nov. gen. et sp., a large theropod from the Maastrichtian Pari Aike Formation, Southern Patagonia, Argentina. Cretaceous Res 29:468–480

    Article  Google Scholar 

  • Padian K, Chiappe LM (1998) The origin and early evolution of birds. Biol Rev 73:1–42

    Article  Google Scholar 

  • Rauhut OWM (2003) The interrelationships and evolution of basal theropod dinosaurs. Spec Pap Palaeontol 69:1–213

    Google Scholar 

  • Russell DA (1972) Ostrich dinosaurs from the Late Cretaceous of western Canada. Can J Earth Sci 9:375–402

    Article  Google Scholar 

  • Sampson SD, Krause DW (2007) Majungasaurus crenatissimus (Theropoda: Abelisauridae) from the Late Cretaceous of Madagascar. Soc Vertebr Paleontol Mem 8:1–184

    Google Scholar 

  • Sereno PC (1999) The evolution of dinosaurs. Science 284:2137–2147

    Article  CAS  PubMed  Google Scholar 

  • Sereno PC, Martinez RN, Wilson JA, Varicchio DJ, Alcober OA, Larsson HCE (2008) Evidence for avian intrathoracic air sacs in a new predatory dinosaur from Argentina. PLoS ONE 3(9):1–20

    Article  Google Scholar 

  • Smith ND, Makovicky PJ, Hammer WR, Currie PJ (2007) Osteology of Cryolophosaurus ellioti from the Early Jurassic of Antarctica and implications for early theropod evolution. Zool J Linn Soc-Lond 151:377–421

    Article  Google Scholar 

  • Smith ND, Makovicky PJ, Agnolin FL, Ezcurra MD, Pais D, Salisbury SW (2008) A Megaraptor-like theropod (Dinosauria: Tetanurae) in Australia; support for faunal exchange across eastern and western Gondwana in the mid-Cretaceous. P Roy Soc B-Biol Sci 275:2085–2093

    Article  Google Scholar 

  • Turner AH, Smith ND, Callery JA (2009) Gauging the effects of sampling failure in biogeographical analysis. J Biogeogr 36:612–625

    Article  Google Scholar 

  • Wu X-C, Currie PJ, Dong Z, Pan S, Wang T (2009) A new theropod dinosaur from the Middle Jurassic of Lufeng, Yunnan, China. Acta Geol Sin-Engl 83:9–24

    Article  Google Scholar 

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Acknowledgements

SLB is supported by an NSF Graduate Research Fellowship at Columbia University. Specimen visits central to this study were funded by the Palaeontographical Society and the Jurassic Foundation. We thank numerous curators and researchers for access to specimens in their care, primarily J. Calvo, S. Chapman, S. Hutt, R. Masek, P.C. Sereno and X. Xu.

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Correspondence to Roger B. J. Benson.

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Benson, R.B.J., Carrano, M.T. & Brusatte, S.L. A new clade of archaic large-bodied predatory dinosaurs (Theropoda: Allosauroidea) that survived to the latest Mesozoic. Naturwissenschaften 97, 71 (2010). https://doi.org/10.1007/s00114-009-0614-x

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  • DOI: https://doi.org/10.1007/s00114-009-0614-x

Keywords

  • Neovenatoridae
  • Megaraptora
  • Cretaceous
  • Gondwanan biogeography
  • Dinosaur evolution