England theropods
129450713
The osteology of Neovenator salerii (Dinosauria: Theropoda) from the Wealden Group (Barremian) of the Isle of Wight
Allosauroids were a widespread theropod superfamily, but the best known representatives are Allosaurus itself (Gilmore, 1920; Madsen, 1976) from North America and Sinraptor (Currie and Zhao, 1993) from China. A number of more fragmentary genera are also included in this clade from the Jurassic around the world. This monograph is a description of the Early Cretaceous allosauroid Neovenator salerii, a recently announced large theropod from the Wealden of England (Hutt, et al. 1996; Naish, et al. 2001) This theropod merits attention as it is the most completely known large theropod from the Early Cretaceous of Europe, and it also extends the temporal range of the allosauroids from the Jurassic. The organization of the monograph clearly follows previous descriptions of Allosaurus (Madsen, 1976) and Ceratosaurus (Madsen and Welles, 2000) The authors present a detailed description of the available material, along with extensive comparisons of other large basal theropods including Ceratosaurus (Madsen and Welles, 2000) Allosaurus (Madsen, 1976) Sinraptor (Currie and Zhao, 1993) Torvosaurus (Britt, 1991) and Acrocanthosaurus (Harris, 1998; Currie and Carpenter, 2000) among others. One oversight was the citation of Colbert, 1989, in the text but not in the References section in the mention of Coelophysis as an outgroup taxon. Much of the text is devoted to describing the material at hand, without making a priori assessments as to their phylogenetic utility, which in my opinion, can be useful in relating any future material. Proposed derived characters are noted and extensively discussed. Intraspecific variability is taken into account as much as possible and the observed pathologies described. Without the phylogenetic analysis of the allosauroids (Brusatte and Sereno, 2008) however, the characters are difficult to critique because there is little comparison with more derived theropods. In the practical sense of identifying or supporting hypothesized trends in theropod evolution, such comparisons would have been useful to include. Although the locality information is probably reasonably good, I am not sure that the presented geological column is terribly informative. It portrays the relative position of the Wessex and Vectis formations, and the position of the Neovenator bonebed, but little more. However, the photographs and accompanying text imply that more petrologic and facies information could have been presented in the column. The available fossil material is extensively illustrated with photographs and line drawings. The abbreviations associated with the structures are located within the captions, which is convenient, saving constantly looking at lists of abbreviations in other parts of the text. Unfortunately, the photographs are on a black background, making them dark because they lack sufficient contrast to stand out against it. As noted above, the results of a phylogenetic analysis of the Allosauroidea are presented elsewhere (Brusatte and Sereno, 2008) however, a cladogram is provided in the present monograph. I assume that it represents a consensus tree, but no information is given as to how it was obtained, nodal support, or the associated global indices. However, it is one of the few phylogenetic analyses including Neovenator. It shows Neovenator as a basal carcharodontosaurid, a status that was also supported in previous analyses by Rauhut (2003) and Holtz et al. (2004) Generally, this discussion of Neovenator updates a poorly known taxon from the Early Cretaceous, an important time period from which relatively little fossil material is currently known. Additionally, it provides extensive anatomical and comparative information for any future research program concerned with basal theropods. However, at PS120 or roughly $200, it is somewhat expensive.
Stephen L Brusatte Rbj Benson Stephen Hutt
128882961
The footprints of iguanodon: A history and taxonomic study
A historical survey of the discovery of footprints of iguanodont dinosaurs is presented, from the first reports in 1846 to the present. Reasons are given for considering the ichnogenera Iguanodonichnus and Camptosaurichnus to be problematical and respectively comprising the footprints of sauropods and theropods; consequently, no valid ichnogenus has been available to accommodate those of typical iguanodonts. The desirability of selecting a type series of Iguanodon footprints from the Early Cretaceous Purbeck Beds of southern England, rather than from the somewhat later Hastings Beds (Weal den) is explained. The new ichnogenus Iguanodon tipus is proposed; its type ichnospecies, I. burreyi, is illustrated and discussed.
William A S Sarjeant Justin B Delair Martin G Lockley
128095266
The carnivorous dinosaurs
Contributors Acknowledgments Introduction I. Theropods Old and New 1. Tibiae of Small Theropod Dinosaurs from Southern England: From the Middle Jurassic of Stonesfield near Oxford and the Lower Cretaceous of the Isle of Wight Peter M. Galton and Ralph E. Molnar 2. New Small Theropod from the Upper Jurassic Morrison Formation of Wyoming Kenneth Carpenter, Clifford Miles, and Karen Cloward 3. Redescription of the Small Maniraptoran Theropods Ornitholestes and Coelurus from the Upper Jurassic Morrison Formation of Wyoming Kenneth Carpenter, Clifford Miles, John H. Ostrom, and Karen Cloward 4. The Enigmatic Theropod Dinosaur Erectopus superbus (Sauvage 1882) from the Lower Albian of Louppy le Chateau (Meuse, France) Ronan Allain 5. Holotype Braincase of Nothronychus mckinleyi Kirkland and Wolfe 2001 (Theropoda Therizinosauridae) from the Upper Cretaceous (Turonian) of West Central New Mexico James I. Kirkland, David K. Smith, and Douglas G. Wolfe 6. Anatomy of Harpymimus okladnikovi Barsbold and Perle 1984 (Dinosauria Theropoda) of Mongolia Yoshitsugu Kobayashi and Rinchen Barsbold 7. Theropod Teeth from the Upper Cretaceous (Campanian Maastrichtian) Big Bend National Park, Texas Julia T. Sankey, Barbara R. Standhardt, and Judith A. Schiebout 8. Last Patagonian Non Avian Theropods Rodolfo A. Coria and Leonardo Salgado II. Theropod Working Parts 9. Enamel Microstructure Variation within the Theropoda Kathy Stokosa 10. Bite Me: Biomechanical Models of Theropod Mandibles and Implications for Feeding Behavior Francois Therrien, Donald M. Henderson, and Christopher B. Ruff 11. Body and Tail Posture in Theropod Dinosaurs Gregory S. Paul 12. Furcula of Tyrannosaurus rex Peter Larson and J. Keith Rigby Jr. 13. The Pectoral Girdle and the Forelimb of Heyuannia (Dinosauria: Oviraptorosauria) Junchang Lu, Dong Huang, and Licheng Qiu III. Theropods as Living Animals 14. Sexual Dimorphism in the Early Jurassic Theropod Dinosaur Dilophosaurus and a Comparison with Other Related Forms Robert Gay 15. Sexual Selection and Sexual Dimorphism in Theropods Ralph E. Molnar 16. An Unusual Multi Individual Tyrannosaurid Bonebed in the Two Medicine Formation (Late Cretaceous, Campanian) of Montana (USA) Philip J. Currie, David Trexler, Eva B. Koppelhus, Kelly Wicks, and Nate Murphy 17. Evidence for Predator Prey Relationships: Examples for Allosaurus and Stegosaurus Kenneth Carpenter, Frank Sanders, Lorrie A. McWhinney, and Lowell Wood 18. Theropod Paleopathology: State of the Art Review Bruce Rothschild and Darren H. Tanke Index
Kenneth Carpenter
129857935
Theropod dinosaur teeth from the lowermost Cretaceous Rabekke Formation on Bornholm, Denmark
The dinosaur fauna of the palynologically dated lower Berriasian Skyttegard Member of the Rabekke Formation on the Baltic island of Bornholm, Denmark, is represented by isolated tooth crowns. The assemblage is restricted to small maniraptoran theropods, assigned to the Dromaeosauridae incertae sedis and Maniraptora incertae sedis. The dromaeosaurid teeth are characterized by their labiolingually compressed and distally curved crowns that are each equipped with a lingually flexed mesial carina and a distinctly denticulated distal cutting edge. A morphologically aberrant tooth crown (referred to as Maniraptora incertae sedis) has triangular denticles of uneven width, a feature occasionally found in Upper Cretaceous hesperornithiform toothed diving birds, but also in premaxillary teeth of the velociraptorine Nuthetes from the Lower Cretaceous of England.
Johan Lindgren Philip J Currie Jan Rees Mikael Siverson Sofie Lindstrom Carl Alwmark
130136971
Redescription de Streptospondylus altdorfensis, le dinosaure theropode de Cuvier, du Jurassique de Normandie
Redescription of Streptospondylus altdorfensis, Cuvier's theropod dinosaur from the Jurassic of Normandy. The theropod dinosaur remains from the Callovo Oxfordian of the Vaches Noires, figured for the first time by Cuvier, are redescribed. The systematic revision shows that Streptospondylus altdorfensis is the valid name to which the whole of the material should be assigned. A few vertebral features suggest the close relationships existing between Streptospondylus and Eustreptospondylus from the Callovian of England: both genus are related to Spinosauroidea. The diversity of the European theropods at the end of the Middle Jurassic and the beginning of the Late Jurassic is outlined.
Ronan Allain
129765945
New Important Iguanodontid and Theropod Trackways of the Tracksite Obernkirchen in the Berriasian of NW Germany and Megatracksite Concept of Central Europe
This article examines the high resolution track horizon stratigraphy at the outcrop Obernkirchen. Massive sandstones, products of marine sand bar and fluviatile environments are present at the tracksite. Recently two track beds were examined in the outcrop. One new track slab of the lower track bed is described exposing well preserved quadrupedal iguanodontid tracktypes of Iguanodontipus Sarjeant, Delair, and Lockley, 1998, and bipedal theropod tracks Megalosauropus Kaever and Lapparent, 1974. The ichnogenus Iguanodontipus is discussed and the diagnosis extended. The tracksite Obernkirchen belongs to a megatracksite of the ancient coastline of the marginal marine Hercynic Basin of the Lower Cretaceous of Europe, including the four well known sites Obernkirchen, Bad Rehburg, Munchehagen, and Buckeburg of Northwest Germany. Three different tracktypes of huge sauropods, theropods, and ornithopods are abundant at basal Lower Cretaceous siliciclastic coastlines in different regions in Spain, Portugal, England,
Cajus G Diedrich
9127891
A reappraisal of Thecocoelurus daviesi (Dinosauria: Theropoda) from the Early Cretaceous of the Isle of Wight
An incomplete cervical vertebra of a theropod dinosaur from the Lower Cretaceous of the Isle of Wight, England, first described by Seeley in 1888 and made the type of Thecocoelurus daviesi shows features unique to the oviraptorosaur therizinosauroid clade of coelurosaurian theropods. It differs from the cervical vertebrae of therizinosauroids and closely resembles those of the caenagnathid oviraptorosaur Chirostenotes If this identification is correct, this specimen is, with the exception of a problematical small femur and some Spanish eggshell fragments, Europe's first reported member of the oviraptorosaur therizinosauroid clade and also one of the oldest representatives of the clade. Comparison of the specimen with the cervical vertebrae of other theropods indicates that it came from a large animal compared to most other oviraptorosaurs.
Darren Naish David M Martill
195060883
A JAW FRAGMENT OF MEGALOSAURUS IN THE UPPER CALLOVIAN OF THE VACHES NOIRES CALVADOS FRANCE
An anterior fragment of left maxilla from a large theropod dinosaur from the upper Callovian of the Vaches Noires cliffs, near Villers sur Mer (Calvados) is described and compared to some theropods from the Jurassic of England (Eustreptospondylus and Megalosaurus) and North America (Allosaurus) It is with the representatives of the genus Megalosaurus, notably M. bucklandi from the Bathonian of Stonesfield, that the resemblances are most significant, and the Villers specimen is designated as Megalosaurus sp. The available data suggest an increase in the robustness of the jaws and the size of the teeth in the European Megalosauridae during the Jurassic (perhaps linked to increase in prey size) The possibility of attributing the type of Piveteausaurus divesensis, a braincase from the Callovian of Dives (Calvados) to Megalosaurus is discussed. Original citation: Buffetaut, E. G. Pennetier, E. Pennetier. 1991. Un fragment de machoire de Megalosaurus dans le Callovien superieur des Vaches Noires (Calvados, France) Revue de Paleobiologie 10(2):379 387. Translated by Matthew Carrano, Department of Paleobiology, Smithsonian Institution, September 2007.
Eric Buffetaut Gerard Pennetier
209373662
Redescription of Streptospondylus altdorfensis, Cuvier's theropod dinosaur, from the Jurassic of Normandy
Redescription of Streptospondylus altdorfensis, Cuvier's theropod dinosaur, from the Jurassic of Normandy The theropod dinosaur remains from the CallovoOxfordian of the Vaches Noires, figured for the first time by Cuvier are redecrisbed. The systematic revision shows that Streptospondylus altdorfensis is the valid name to which the whole of the material should be assigned. A few vertebral features suggest the close relationships existing between Streptospondylus and Eustreptospondylus from the Callovian of England both genera are related to the Spinosauroidea. The diversity of the European theropods at the end the Middle Jurassic and the beginning of the Late Jurassic is outlined.
Ronan Allain
88945142
Fauna wealdiana din Bauxitele de la Cornet: Lentila 204, judetul Bihor in comparatie cu faune de varsta similara din Anglia
The Wealden fauna, exceptionally conserved in bauxites from Cornet Lentila 204, Bihor County, consists of scheletal remains of dinosaurs, pterosaurs and birds. The predorninance of ornithopods is remarcable. two taxa have been identified: Camptosaurus and Valdosaurus; as well as an ankylosaur and a small sized theropod, but these are extremely rare The Wealden fauna of South East England is dominated by ornithopod dinosaurs, but sauropods and theropods are relative abundent as well. Fish, crocodile and turtle remains were also identified, which are totally absent in the Cornet assemblage. In the English deposits there is a rare occurence of pterosaurs and mammals. The most remarcable difference is the size of the vertebrates, those from Comet being of more reduced sized in comparison with those from England, which is an evidence for early geographical isolation and evolution in insularity, attested by the low diversity of the dinosaurs.
Erika Posmosanu