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Oblitosaurus - Wikipedia

From Wikipedia, the free encyclopedia

Oblitosaurus Temporal range: Late Jurassic, Kimmeridgian–Tithonian PreꞒ Ꞓ O S D C P T J K Pg N

Skeletal reconstruction
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	†Ornithischia
Clade:	†Neornithischia
Clade:	†Ornithopoda
Clade:	†Ankylopollexia
Genus:	†Oblitosaurus Sánchez-Fenollosa et al., 2023
Species:	†O. bunnueli
Binomial name
†Oblitosaurus bunnueli Sánchez-Fenollosa et al., 2023

Oblitosaurus (meaning "forgotten lizard") is a genus of ankylopollexian ornithopod dinosaur from the Late Jurassic Villar del Arzobispo Formation of Spain. The type species is Oblitosaurus bunnueli.^[1]

Discovery and naming

The type specimens of Oblitosaurus consist of a dentary tooth (CPT-1440), an ungual pollex from the left manus (CPT-1444), and an almost complete left hindlimb (MAP-8290 to MAP-8299). Large footprints from the same area may also belong to this taxon.^[1]

The skeletal remains were identified as belonging to a new genus and species of ornithopod, Oblitosaurus bunnueli, in 2023. The generic name, "Oblitosaurus", comes from the Latin "oblitus", meaning "obsolete" or "forgotten", and the Greek word "sauros", meaning "lizard", referring to how its fossils were the last to be found from the site where they were discovered. The specific name, "bunnueli", honors Spanish filmmaker Luis Buñuel.^[1]

Description

Oblitosaurus has been estimated as being 6–7 metres (20–23 ft) long, larger than its close relatives Camptosaurus and Draconyx. This makes it the largest ornithopod known from Europe in the Late Jurassic.^[1]

Classification

Sánchez-Fenollosa et al. (2023) placed Oblitosaurus in a phylogenetic analysis and found it to be a basal ankylopollexian as the sister taxon to Draconyx, forming a European ankylopollexian clade that did not seem to appear in North America. Furthermore, their analysis also supports a monophyly of Camptosaurus, showing for the first time all the species assigned to it in a single clade. The results of their phylogenetic analysis are displayed in the cladogram below.^[1]

Iguanodontia

Rhabdodontidae

Tenontosaurus tilletti

Dryosauridae

Ankylopollexia

	Draconyx

	Oblitosaurus

Camptosauridae

Camptosaurus dispar

	Camptosaurus prestwichii (Cumnoria)

	Camptosaurus aphanoecetes (Uteodon)

Styracosterna

Dakotadon

Hippodraco

Iguanacolossus

Proa

Lanzhousaurus

Hypselospinus

Bayannurosaurus

Ouranosaurus

Hadrosauriformes

	Iguanodontidae

	Hadrosauroidea

Paleoenvironment

Apart from Oblitosaurus, the Villar del Arzobispo Formation also produced the remains of many other animals, including a distinct Camptosaurus-like ornithopod known from vertebrae,^[2] a stegosaur similar to Dacentrurus,^[3] and various sauropods, such as Turiasaurus, Losillasaurus, Galvesaurus, and Aragosaurus.^[4]^[5]^[6]^[7]

References

^ ^a ^b ^c ^d ^e Sánchez-Fenollosa, Sergio; Verdú, Francisco; Cobos, Alberto (2023). "The largest ornithopod (Dinosauria: Ornithischia) from the Upper Jurassic of Europe sheds light on the evolutionary history of basal ankylopollexians". Zoological Journal of the Linnean Society. 199 (4): 1013–1033. doi:10.1093/zoolinnean/zlad076.
^ Sánchez-Fenollosa, S.; Verdú, F. J.; Suñer, M.; de Santisteban, C. (2022-01-08). "Tracing Late Jurassic ornithopod diversity in the eastern Iberian Peninsula: Camptosaurus-like postcranial remains from Alpuente (Valencia, Spain)". Journal of Iberian Geology. 48 (1): 65–78. Bibcode:2022JIbG...48...65S. doi:10.1007/s41513-021-00182-z. ISSN 1698-6180. S2CID 245804125.
^ Cobos, Alberto; Royo-Torres, Rafael; Luque, Luis; Alcalá, Luis; Mampel, Luis (2010-07-01). "An Iberian stegosaurs paradise: The Villar del Arzobispo Formation (Tithonian–Berriasian) in Teruel (Spain)". Palaeogeography, Palaeoclimatology, Palaeoecology. 293 (1): 223–236. Bibcode:2010PPP...293..223C. doi:10.1016/j.palaeo.2010.05.024. ISSN 0031-0182.
^ Royo-Torres, Rafael; Cobos, Alberto; Alcalá, Luis (2006-12-22). "A Giant European Dinosaur and a New Sauropod Clade" (PDF). Science. 314 (5807): 1925–1927. Bibcode:2006Sci...314.1925R. doi:10.1126/science.1132885. ISSN 0036-8075. PMID 17185599. S2CID 9343711.
^ Royo-Torres, Rafael; Cobos, Alberto; Mocho, Pedro; Alcalá, Luis (2021-01-01). "Origin and evolution of turiasaur dinosaurs set by means of a new 'rosetta' specimen from Spain". Zoological Journal of the Linnean Society. 191 (1): 201–227. doi:10.1093/zoolinnean/zlaa091. ISSN 0024-4082.
^ Pérez-Pueyo, M.; Moreno-Azanza, M.; Barco, J.L.; Canudo, J.I. (2019). "New contributions to the phylogenetic position of the sauropod Galvesaurus herreroi from the late Kimmeridgian-early Tithonian (Jurassic) of Teruel (Spain)" (PDF). Boletín Geológico y Minero. 130 (3): 375–392. doi:10.21701/bolgeomin.130.3.001.
^ Royo-Torres, Rafael; Upchurch, Paul; Mannion, Philip D.; Mas, Ramón; Cobos, Alberto; Gascó, Francisco; Alcalá, Luis; Sanz, José Luis (2014-07-01). "The anatomy, phylogenetic relationships, and stratigraphic position of the Tithonian-Berriasian Spanish sauropod dinosaur Aragosaurus ischiaticus". Zoological Journal of the Linnean Society. 171 (3): 623–655. doi:10.1111/zoj.12144. ISSN 0024-4082.

Ornithopoda

Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Ornithischia
Clade: Neornithischia
Clade: Cerapoda

Avemetatarsalia

- see Avemetatarsalia

Ornithischia

see Ornithischia
Ornithopoda	see below↓

Ampelognathus? Emiliasaura Fostoria? Muttaburrasaurus?
Tenontosauridae?	Convolosaurus? Iani Tenontosaurus
Rhabdodontidae	Matheronodon Mochlodon Pareisactus Rhabdodon Transylvanosaurus Zalmoxes

Dryomorpha

Draconyx Hesperonyx Owenodon
Dryosauridae	Dryosaurus Dysalotosaurus Elrhazosaurus Eousdryosaurus Iyuku? Kangnasaurus? Valdosaurus

Ankylopollexia

Hadrosauriformes

Bolong Brighstoneus Hypselospinus Jinzhousaurus Mantellisaurus Morelladon Ouranosaurus
Iguanodontidae	Barilium? Comptonatus Iguanodon Mantellisaurus?
Hadrosauroidea	see below↓

Hadrosauroidea

Hadrosauridae

Lambeosaurinae

Adynomosaurus Ajnabia Angulomastacator Aralosaurus Arenysaurus Blasisaurus Canardia Jaxartosaurus Kazaklambia Latirhinus? Minqaria Nipponosaurus Pararhabdodon Tsintaosaurus
Parasaurolophini	Adelolophus Charonosaurus Parasaurolophus Tlatolophus
Lambeosaurini	Amurosaurus Corythosaurus Hypacrosaurus Lambeosaurus Magnapaulia Olorotitan Sahaliyania Velafrons

Saurolophinae

Barsboldia
Brachylophosaurini	Acristavus Brachylophosaurus Maiasaura Ornatops Probrachylophosaurus Wulagasaurus?
Austrokritosauria	Bonapartesaurus Huallasaurus Kelumapusaura Secernosaurus
Kritosaurini	Anasazisaurus? Coahuilasaurus Gryposaurus Kritosaurus Naashoibitosaurus Rhinorex
Saurolophini	Augustynolophus Prosaurolophus Saurolophus
Edmontosaurini	Edmontosaurus Kamuysaurus Kerberosaurus Kundurosaurus Laiyangosaurus Shantungosaurus

Ichnotaxa	Amblydactylus Anomoepus Bonaparteichnium Camptosaurichnus Caririchnium Dakotasaurus Dinehichnus Hadrosaurichnus Iguanodontipus Orcauichnites Ornithopodichnites Shiraminesauropus Sousaichnium Staurichnium Tetrapodosaurus Wintonopus
Ootaxa	Guegoolithus
Nomina dubia	Arstanosaurus Cionodon Claorhynchus? Diclonius Eucercosaurus Fulgurotherium Glishades Koutalisaurus Loncosaurus Mandschurosaurus Microhadrosaurus Orthomerus Pteropelyx Siluosaurus Stephanosaurus Syngonosaurus Thespesius Tichosteus Trachodon
Other articles	Arkharavia Basturs Poble bonebed Dakota (fossil) Hadrosaur diet Hypsilophodont List of informal dinosaur names (contains hadrosaur nomina nuda) Timeline of hadrosaur research Edmontosaurus mummy AMNH 5060 Edmontosaurus mummy S.M. R4036 Willinakaqe

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