Theropod teeth from the Middle-Upper Jurassic Shishugou Formation of northwest Xinjiang, China

Han, Fenglu; Clark, James M.; Xu, Xing; Sullivan, Corwin; Choiniere, Jonah N.; Hone, David W. E.

doi:10.1080/02724634.2011.546291

Cited by 27 publications

(17 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Absolute tooth size is a homoplastic feature that also varies allometrically and must be treated with caution for classification purposes. Nonetheless, this feature has proven to be useful to discriminate the teeth of different theropod taxa (Smith, 2005;Smith et al, 2005;Han et al, 2011). Theropods bearing crowns larger than 6 cm are only known in non-neocoelurosaur averostrans: Allosauroidea (e.g., Acrocanthosaurus, Allosaurus, Carcharodontosaurus, Giganotosaurus, Mapusaurus, Sinraptor), Ceratosaurus, Megalosauridae (e.g., Afrovenator, Megalosaurus, Spinosaurus, Torvosaurus, Wiehenvenator), and some derived Tyrannosauroidea (e.g., Albertosaurus, Bistahieversor, Tarbosaurus, Tyrannosaurus).…”

Section: Crown Height Higher Than 60 MMmentioning

confidence: 99%

“…This crown abnormality is not rare in the dentition of Tyrannosauridae, and among 993 tyrannosaurid teeth examined by Erickson (1995), 11% displayed such a feature. Outside the clade of Tyrannosauridae, a split carina has been reported from isolated theropod teeth with uncertain or broad affinities: a possible coelophysoid from the Middle Jurassic Toutunhe Formation of Liuhonggou, China (Maisch and Matzke, 2003); a possible dromaeosaurid from the Middle-Upper Jurassic Shishugou Formation of Wucaiwan, China (Morphotype 5; Han et al, 2011); a tyrannosauroid from the Lower Cretaceous of the Rhenish Massif of Germany (Lanser and Heimhofer, 2015); and indeterminate theropods from the Upper Cretaceous Minhe Formation of China (Bohlin, 1953), Fruitland Formation of the San Juan Basin in New Mexico, USA, and the Bauru group of Brazil (Kellner, 1996). The theropod tooth from the upper portion of the Bauru group shows a morphology reminiscent to that of abelisaurid teeth (C.H.…”

Section: Split Mesial Carinamentioning

confidence: 99%

“…Teeth, and particularly tooth enamel, are robust skeletal elements (Hillson, 2005), and most toothed theropods had 50 or more teeth that were replaced every one to two years (Fiorillo and Currie, 1994;Erickson, 1996). Consequently, theropod teeth are one of the most common fossils in terrestrial Mesozoic formations (e.g., Erickson, 1996;Smith et al, 2005;Blob and Badgley, 2007) and are constantly reported in the literature (e.g., Currie et al, 1990;Rauhut and Werner, 1995;Baszio, 1997;Zinke, 1998;Sankey et al, 2002;Sweetman, 2004;Maganuco et al, 2005;Vullo et al, 2007;Larson, 2008;Casal et al, 2009;Lubbe et al, 2009;Ősi et al, 2010;Han et al, 2011;Sues and Averianov, 2013;Larson and Currie, 2013;Richter et al, 2013;Torices et al, 2015;Kear et al, 2013;Madzia, 2014;Hendrickx and Mateus, 2014a;Cobos et al, 2014;Tavares et al, 2014;Fanti et al, 2014;Brusatte and Clark, 2015;Csiki-Sava et al, 2016;Gerke and Wings, 2016;Alonso et al, 2017;Malafaia et al, 2017a;Avrahami et al, 2018;Frederickson et al, 2018;…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends

Hendrickx

Mateus

Araújo

et al. 2019

Palaeontol Electron

Self Cite

150

View full text Add to dashboard Cite

show abstract

Section: Crown Height Higher Than 60 MMmentioning

confidence: 99%

Section: Split Mesial Carinamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends

Hendrickx

Mateus

Araújo

et al. 2019

Palaeontol Electron

Self Cite

150

View full text Add to dashboard Cite

show abstract

“…Although theropod teeth are rather simple structures, far less informative than mammal teeth (Longrich 2008;Han et al 2011) or many other parts of the skeleton such as the quadrate , a number of workers have successfully used theropod tooth morphology for taxonomic purposes (e.g., Currie et al 1990;Fiorillo & Currie 1994;Rauhut & Werner 1995;Baszio 1997;Zinke 1998;Fiorillo & Gangloff 2001;Rauhut 2002;Sankey et al 2002;Fanti & Therrien 2007;Larson 2008;Longrich 2008;Brinkman 2008;Sankey 2008;Soto & Perea 2008;Buckley et al 2010;Larson et al 2010;Ősi et al 2010;Han et al 2011;Larson & Currie 2013). Tooth measurements were first utilized by Currie et al (1990) and Farlow et al (1991) for systematic identification of theropod teeth, and later authors followed or modified this method to document isolated theropod teeth (e.g., Fiorillo & Currie 1994;Baszio 1997;Holtz et al 1998;Sankey 2001;Sankey et al 2002;Bakker & Bir 2004;Samman et al 2005;Sankey 2008;Larson 2008;Han et al 2011;Larson & Currie 2013;Torices et al in press). Smith (2005) and Smith et al (2005) were the first to successfully discriminate theropod teeth to the genus level based on a quantitative methodology and discriminant analyses.…”

Section: Introductionmentioning

confidence: 99%

Abelisauridae (Dinosauria: Theropoda) from the Late Jurassic of Portugal and dentition-based phylogeny as a contribution for the identification of isolated theropod teeth

Hendrickx

Mateus

2014

Zootaxa

110

153

View full text Add to dashboard Cite

Theropod dinosaurs form a highly diversified clade, and their teeth are some of the most common components of the Mesozoic dinosaur fossil record. This is the case in the Lourinhã Formation (Late Jurassic, Kimmeridgian-Tithonian) of Portugal, where theropod teeth are particularly abundant and diverse. Four isolated theropod teeth are here described and identified based on morphometric and anatomical data. They are included in a cladistic analysis performed on a data matrix of 141 dentition-based characters coded in 60 taxa, as well as a supermatrix combining our dataset with six recent datamatrices based on the whole theropod skeleton. The consensus tree resulting from the dentition-based data matrix reveals that theropod teeth provide reliable data for identification at approximately family level. Therefore, phylogenetic methods will help identifying theropod teeth with more confidence in the future. Although dental characters do not reliably indicate relationships among higher clades of theropods, they demonstrate interesting patterns of homoplasy suggesting dietary convergence in (1) alvarezsauroids, therizinosaurs and troodontids; (2) coelophysoids and spinosaurids; (3) compsognathids and dromaeosaurids; and (4) ceratosaurids, allosauroids and megalosaurids. Based on morphometric and cladistic analyses, the biggest tooth from Lourinhã is referred to a mesial crown of the megalosaurid Torvosaurus tanneri, due to the elliptical cross section of the crown base, the large size and elongation of the crown, medially positioned mesial and distal carinae, and the coarse denticles. The smallest tooth is identified as Richardoestesia, and as a close relative of R. gilmorei based on the weak constriction between crown and root, the "eight-shaped" outline of the base crown and, on the distal carina, the average of ten symmetrically rounded denticles per mm, as well as a subequal number of denticles basally and at mid-crown. Finally, the two medium-sized teeth belong to the same taxon and exhibit pronounced interdenticular sulci between distal denticles, hooked distal denticles for one of them, an irregular enamel texture, and a straight distal margin, a combination of features only observed in abelisaurids. They provide the first record of Abelisauridae in the Jurassic of Laurasia and one of the oldest records of this clade in the world, suggesting a possible radiation of Abelisauridae in Europe well before the Upper Cretaceous.

show abstract

“…[Colour online. ] thors (e.g., Han et al 2011;Xu and Clark 2008) to tentatively assign isolated theropod teeth from the Shishugou Formation either to more inclusive clades (i.e., Tetanurae, Tyrannosauroidea) or to metriacanthosaurids.…”

Section: Introductionmentioning

confidence: 99%

Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China

et al. 2020

Self Cite

View full text Add to dashboard Cite

The dental morphology of the holotype of the theropod Sinraptor dongi from the Jurassic Shishugou Formation of China is comprehensively described. We highlight a combination of dental features that appear to be restricted to Sinraptor: (i) crowns with denticulated mesial and distal carinae extending from the root and an irregular surface texture on the enamel; (ii) a D-to salinon-shaped cross-sectional outline at the crown base in mesialmost teeth; (iii) mesial crowns with mesial carinae spiraling mesiolingually and lingually positioned longitudinal groove adjacent to the mesial carina; and (iv) particularly labiolingually compressed lateral teeth with weakly labially deflected distal carinae, flat to concave basocentral surfaces of the labial margins of the crowns, and horizontally elongated distal denticles showing short to well-developed interdenticular sulci. Using cladistic, multivariate, discriminant, and cluster analyses, we demonstrate that the dentition of Sinraptor is relatively similar to that of ceratosaurids, megalosauroids, and other allosauroids and is particularly close to that of Allosaurus. The dental anatomy of Sinraptor and Allosaurus, which differs mainly in the labiolingual compression of the lateral crowns and in the number of premaxillary teeth, shows adaptations towards a predatory lifestyle, including premaxillary teeth capable of enduring tooth-tobone contact and crowns with widely separated mesial and distal carinae capable of inflicting widely open wounds.Résumé : La morphologie dentaire de l'holotype du théropode Sinraptor dongi de la Formation jurassique de Shishugou, en Chine, est décrite de manière exhaustive. Nous soulignons une combinaison de caractères dentaires qui semblent être exclusifs à Sinraptor, dont (i) des couronnes présentant des carènes mésiales et distales s'étendant jusqu'à la racine, et une texture de l'émail irrégulière, (ii) une section transversale de la base de la couronne des dents les plus mésiales en forme de D ou de salinon, (iii) des carènes mésiales des couronnes mésiales spiralant mésiolingualement et un sillon longitudinal adjacent à la carène mésiale sur la surface linguale et (iv) des dents latérales particulièrement comprimées labiolingualement présentant des carènes distales faiblement déviées labialement, des surfaces basocentrales plates à concaves des marges labiales des couronnes et des denticules distaux allongés horizontalement montrant des sulcus interdenticulaires courts à bien développés. En utilisant des analyses cladistiques, multivariées, discriminantes et typologiques, nous démontrons que la dentition de Sinraptor est assez semblable à celle des cératosauridés, des mégalosauroïdes et d'autres allosauroïdes, et est particulièrement proche de celle d'Allosaurus. L'anatomie dentaire de Sinraptor et d'Allosaurus, dont la principale différence est la compression labiolinguale des couronnes latérales et le nombre de dents prémaxillaires, présente des adaptations à un mode de vie prédateur, dont des dents prémaxillaires résistantes aux contac...

show abstract

Theropod teeth from the Middle-Upper Jurassic Shishugou Formation of northwest Xinjiang, China

Cited by 27 publications

References 80 publications

The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends

The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends

Abelisauridae (Dinosauria: Theropoda) from the Late Jurassic of Portugal and dentition-based phylogeny as a contribution for the identification of isolated theropod teeth

Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China

Contact Info

Product

Resources

About