Osteology of Huabeisaurus allocotus (Sauropoda: Titanosauriformes) from the Upper Cretaceous of China

D’Emic, Michael D.; Mannion, Philip D.; Upchurch, Paul; Benson, Roger B. J.; Qiqing, Pang; Zhengwu, Cheng

doi:10.1371/journal.pone.0069375

Cited by 57 publications

(82 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Suteethorn et al 2013). Convergence in tooth Historical Biology 15 morphotypes has also been suggested for brachiosaurids and titanosaurs (Chure et al 2010) and both with euhelopodids (D'Emic et al 2013). The differences shown by the three proposed morphotypes can be explained by two different ways (or a combination of both): (i) the three morphotypes represents three distinct taxa (in generic or specific level) inside or outside the Turiasauria clade (this morphology could not be exclusive of the clade); or (ii) the three morphotypes belong to the same taxon and the variability is associated to a distinct position along the tooth row, as occurs in other sauropods such as Giraffatitan (Janensch 1936), Camarasaurus (Gilmore 1925), Abydosaurus (Chure et al 2010) or Euhelopus (Wiman 1929;Wilson and Upchurch 2009;Poropat and Kear 2013).…”

Section: Historical Biology 13mentioning

confidence: 88%

“…We also plotted the Log 10 SI for Sauropodomorpha, non-neosauropod eusauropods and five sauropod clades: Diplodocoidea, Brachiosauridae, Euhelopodidae and Lithostrotia (using Chure et al 2010;D'Emic et al 2013 data; see Appendix 2) versus the number of genera that have teeth included in our data (Figure 8). Turiasaurus riodevensis and the Portuguese Upper Jurassic heartshaped are plotted together and they show a narrow range (Martínez et al 2000).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Turiasauria-like teeth from the Upper Jurassic of the Lusitanian Basin, Portugal

Mocho

Royo–Torres²,

Malafaia

et al. 2015

Historical Biology

View full text Add to dashboard Cite

Turiasauria is a clade of eusauropods with a wide stratigraphic range that could extend from the Bathonian to the lower Aptian including Turiasaurus, Losillasaurus, Zby and putatively, Galveosaurus, Atlasaurus and isolated remains from Middle Jurassic-to-Lower Cretaceous. Some are characterised by the presence of heart-shaped teeth. Several tooth occurrences from the Portuguese Upper Jurassic with this type of morphology (SI: 1.1-1.8) are reported and discussed. If this morphology is regarded as synapomorphic of Turiasauria, the teeth will be tentatively related to this clade. From a sample of 43 teeth, three main morphotypes are described. Three hypotheses might explain the morphological variation: (1) the range of tooth morphologies indicates variation in the jaw, (2) the range of tooth morphologies indicates taxonomic variation or (3) a combination of both. The general wear pattern in morphotypes I and II starts with a distal facet, then the appearance of mesial/apical facet and finally a 'V'-shaped facet. In morphotype III, the wear begins with a mesial facet. The variability observed for Portuguese Upper Jurassic specimens is congruent with the morphological variability along the tooth row shown by other sauropods with spatulate/spoon-shaped teeth and it is considered the most parsimonious hypothesis to explain it.

show abstract

Section: Historical Biology 13mentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Turiasauria-like teeth from the Upper Jurassic of the Lusitanian Basin, Portugal

Mocho

Royo–Torres²,

Malafaia

et al. 2015

Historical Biology

View full text Add to dashboard Cite

show abstract

“…Euhelopus is a member of the Euhelopodidae, an exclusive group of the Early Cretaceous of Asia (D'Emic ; D'Emic et al . ). Nevertheless, new material is needed to improve the taxonomic assignation proposed herein.…”

Section: Discussionmentioning

confidence: 97%

“…, b, ; D'Emic et al . ), such as the presence of parallel mesial and distal edges, a subcircular cross‐section at the base of the crown, and no lingual concavity. Nevertheless, lower SI values, the presence of well‐defined carinae with a markedly compressed apex, and the absence of oval wear facets on the labial/lingual face relates these teeth to the compressed cone‐chisel‐shaped morphology.…”

Section: Sauropod Tooth Morphotypesmentioning

confidence: 99%

Sauropod tooth morphotypes from the Upper Jurassic of the Lusitanian Basin (Portugal)

Mocho

Royo–Torres²,

Malafaia

et al. 2017

Papers in Palaeontology

View full text Add to dashboard Cite

The Upper Jurassic of the Lusitanian Basin has yielded an important fossil record of sauropods, but little information is available about the tooth morphotypes represented in this region. A large sample of teeth, both unpublished and published, is described and discussed here. Four main tooth morphologies are identified: spatulate, heart‐shaped, pencil‐shaped, and compressed cone‐chisel‐shaped. Heart‐shaped teeth are considered to be exclusive to a non‐neosauropod eusauropod, tentatively referred to Turiasauria. The spatulate teeth can be attributed to members of the Macronaria; they have a complex cingulum, more than one lingual facet and a labial ridge. The compressed cone‐chisel‐shaped teeth are also attributed to macronarians and the presence of an axially twisted apex through an arc of 30°–45° suggests putative affinities with Europasaurus and basal titanosauriforms. The variability observed in the overall morphology and wrinkling pattern of the compressed cone‐chisel‐shaped teeth may be due to factors related to the tooth position or to the ontogeny of individuals. Finally, pencil‐shaped teeth with high slenderness index values, oval and apically located wear facets, subcylindrical crowns and lacking carinae, are tentatively assigned to Diplodocoidea. The diversity of tooth morphologies is in accordance with the known palaeobiodiversity of the Portuguese Late Jurassic sauropod fauna, which is composed of non‐neosauropod eusauropods (turiasaurs), diplodocoids (diplodocids) and macronarians (camarasaurids and probably brachiosaurids). The Late Jurassic sauropod fossil record of the Iberian Peninsula presents the broadest tooth morphospace range in the world from this period, suggesting a wide niche partition for sauropods, and corresponding high taxonomic diversity.

show abstract

“…All of these animals are considerably larger than the Late Cretaceous euhelopodid Huabeisaurus allocotus (Pang and Cheng, 2000), which has a femur only about 156cm long and a dorsal centrum just 28.6cm wide (D'Emic, et. al.…”

Section: So How Doesmentioning

confidence: 99%

The Chinese colossus: an evaluation of the phylogeny of Ruyangosaurus giganteus and its implications for titanosaur evolution

Sassani

Bivens

2017

Preprint

View full text Add to dashboard Cite

For many years the precise taxonomy of Titanosauria has been a puzzle, and even today only certain segments of this vast clade are well-understood. The phylogenetic positions of many titanosaurs are murky, though specimens often still await rigorous analysis. One of the largest examples is the massive Chinese titanosaur Ruyangosaurus giganteus -though largely incomplete, the holotype is distinct enough to indicate strong phylogenetic affinities with a specific subgroup of titanosaurs. A review of previous literature on Ruyangosaurus , referred tentatively to Andesauridae, shows that this classification is based on three weak, non-diagnostic characters. Ruyangosaurus differs from taxa traditionally included in Andesauridae in at least 20 characters of the torso, femur, and tibia. Several plesiomorphies of Ruyangosaurus are extremely rare in titanosauria except for the clade Lognkosauria and its close relatives. The vertebra initially described as a posterior cervical is most likely an anterior dorsal, with a strong resemblance to that of Puertasaurus . The posterior dorsal of Ruyangosaurus shares synapomorphies with Mendozasaurus and Dreadnoughtus . The femur clusters close to the femora of Malawisaurus , Traukutitan , and Pitekunsaurus . Ruyangosaurus is here recovered as a lognkosaurian, with significant implications for the distribution and evolution of that group and the paleobiology of Mid-Cretaceous China.

show abstract

Osteology of Huabeisaurus allocotus (Sauropoda: Titanosauriformes) from the Upper Cretaceous of China

Cited by 57 publications

References 53 publications

Turiasauria-like teeth from the Upper Jurassic of the Lusitanian Basin, Portugal

Turiasauria-like teeth from the Upper Jurassic of the Lusitanian Basin, Portugal

Sauropod tooth morphotypes from the Upper Jurassic of the Lusitanian Basin (Portugal)

The Chinese colossus: an evaluation of the phylogeny of Ruyangosaurus giganteus and its implications for titanosaur evolution

Contact Info

Product

Resources

About