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Tsintaosaurini
Temporal range: Late Cretaceous, 83.6–66  Ma
Educated reconstruction of the skull of Tsintaosaurus spinorhinus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: † Ornithischia
Clade: † Ornithopoda
Family: † Hadrosauridae
Subfamily: † Lambeosaurinae
Tribe: † Tsintaosaurini
Prieto-Márquez et al., 2013
Type species
† Tsintaosaurus spinorhinus
Young, 1958
Genera

Tsintaosaurini is a tribe of basal lambeosaurine hadrosaurs native to Eurasia. It is thought to contains the genera Tsintaosaurus (from China), Pararhabdodon (from Spain) and Koutalisaurus (also from Spain), [1] though some studies have questioned its existence as a natural grouping. [2]

Classification

Tsintaosaurini is part of the family Hadrosauridae, specifically the subfamily Lambeosaurinae. [2] [3] The existence of a tsintaosaur clade of lambeosaurines was first recognized by palaeontologists Albert Prieto-Márquez and Johnathan R. Wagner, who in 2009 published a paper recognizing a phylogenetic relationship between Tsintaosaurus and Pararhabdodon based both on shared anatomical traits and a phylogenetic analysis. [4] A 2013 study by Prieto-Márquez corroborated the existence of this grouping, and coined the tribe Tsintaosaurini to refer to it. The type genus is Tsintaosaurus, and it was defined as the smallest clade containing Tsintaosaurus spinorhinus and Pararhabdodon isonensis. [3] Several studies since have corroborated the existence of the clade, [2] [5] [6] though some others have failed to recover it, instead finding the two genera in a polytomy of basal lambeosaurs. [2] [7] [8] A 2021 paper by Daniel Madzia and other ornithischian researchers, focused on a revising ornithischian nomenclature and converting existing group names into Phylocode-compliant clades, re-formalized the coining of Tsintaosaurini and revised its definition to be the most inclusive group including T. spinorhinus and P. isonensis, but not Aralosaurus tuberiferus, Lambeosaurus lambei, or Parasaurolophus walkeri. [2] The following cladogram shows the results of a phylogenetic analysis of hadrosaur relationships from a 2022 study: [9]

Hadrosauridae

A 2020 study by Nick Longrich and colleagues describing the genus Ajnabia found Pararhabdodon to be part a monophyletic clade of European lambeosaurs, termed Arenysaurini, rather than a relative of Tsintaosaurus, thereby making the tribe an inapplicable polyphyletic grouping. The cladogram from their study's phylogenetic analysis is shown below: [2] [10]

Hadrosauridae

See also

References

  1. ^ Prieto-Márquez, Albert; Dalla Vecchia, Fabio M.; Gaete, Rodrigo; Galobart, Àngel (2013). "Diversity, Relationships, and Biogeography of the Lambeosaurine Dinosaurs from the European Archipelago, with Description of the New Aralosaurin Canardia garonnensis". PLOS ONE. 8 (7): e69835. Bibcode: 2013PLoSO...869835P. doi: 10.1371/journal.pone.0069835. PMC  3724916. PMID  23922815.
  2. ^ a b c d e f Madzia, D.; Arbour, V.M.; Boyd, C.A.; Farke, A.A.; Cruzado-Caballero, P.; Evans, D.C. (2021). "The phylogenetic nomenclature of ornithischian dinosaurs". PeerJ. 9: e12362. doi: 10.7717/peerj.12362. PMC  8667728. PMID  34966571.
  3. ^ a b Prieto-Márquez, A.; Dalla Vecchia, F. M.; Gaete, R.; Galobart, À. (2013). "Diversity, Relationships, and Biogeography of the Lambeosaurine Dinosaurs from the European Archipelago, with Description of the New Aralosaurin Canardia garonnensis" (PDF). PLOS ONE. 8 (7): e69835. Bibcode: 2013PLoSO...869835P. doi: 10.1371/journal.pone.0069835. PMC  3724916. PMID  23922815.
  4. ^ Prieto-Márquez, A.; Wagner, J.R. (2009). "Pararhabdodon isonensis and Tsintaosaurus spinorhinus: a new clade of lambeosaurine hadrosaurids from Eurasia" (PDF). Cretaceous Research. online preprint (5): 1238. Bibcode: 2009CrRes..30.1238P. doi: 10.1016/j.cretres.2009.06.005. hdl: 2152/41080. S2CID  85081036.
  5. ^ McDonald, A. T.; Wolfe, D. G.; Freedman Fowler, E. A.; Gates, T. A. (2021). "A new brachylophosaurin (Dinosauria: Hadrosauridae) from the Upper Cretaceous Menefee Formation of New Mexico". PeerJ. 9: e11084. doi: 10.7717/peerj.11084. PMC  8020878. PMID  33859873.
  6. ^ Kobayashi, Y.; Takasaki, R.; Kubota, K.; Fiorillo, A. R. (2021). "A new basal hadrosaurid (Dinosauria: Ornithischia) from the latest Cretaceous Kita-ama Formation in Japan implies the origin of hadrosaurids". Scientific Reports. 11 (1): Article number 8547. Bibcode: 2021NatSR..11.8547K. doi: 10.1038/s41598-021-87719-5. PMC  8076177. PMID  33903622.
  7. ^ Prieto-Márquez, Albert; Fondevilla, Víctor; Sellés, Albert G.; Wagner, Jonathan R.; Galobart, Àngel (2018). "Adynomosaurus arcanus, a new lambeosaurine dinosaur from the Late Cretaceous Ibero-Armorican Island of the European Archipelago". Cretaceous Research. 96: 19–37. doi: 10.1016/j.cretres.2018.12.002. S2CID  134582286.
  8. ^ Gates, Terry A.; Evans, David C.; Sertich, Joseph J.W. (2021). "Description and rediagnosis of the crested hadrosaurid (Ornithopoda) dinosaur Parasaurolophus cyrtocristatus on the basis of new cranial remains". PeerJ. 9: e10669. doi: 10.7717/peerj.10669. PMC  7842145. PMID  33552721.
  9. ^ Ramírez-Velasco, Angel Alejandro (2022). "Phylogenetic and biogeography analysis of Mexican hadrosauroids". Cretaceous Research. 138: 105267. Bibcode: 2022CrRes.13805267R. doi: 10.1016/j.cretres.2022.105267. S2CID  249559319.
  10. ^ Longrich, Nicholas R.; Suberbiola, Xabier Pereda; Pyron, R. Alexander; Jalil, Nour-Eddine (2020). "The first duckbill dinosaur (Hadrosauridae: Lambeosaurinae) from Africa and the role of oceanic dispersal in dinosaur biogeography". Cretaceous Research. 120: 104678. doi: 10.1016/j.cretres.2020.104678. S2CID  228807024.


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