Content deleted Content added
Junsik1223 (talk | contribs) |
Yewtharaptor (talk | contribs) mNo edit summary |
||
Line 1:
{{Short description|Extinct genus of theropod dinosaur}}
{{Automatic taxobox
| fossil_range =
| image = Asfaltovenatorskeletal.png
| taxon = Asfaltovenator
Line 8:
| type_species_authority = Rauhut & Pol, 2019
}}
'''''Asfaltovenator''''' (meaning "Cañadón Asfalto Formation hunter" after the fossil formation in which its fossils were found) is a genus of possibly [[allosauroid]] [[dinosaur]] from the [[Lower Jurassic]] (Middle Toarcian) [[Cañadón Asfalto Formation]] from [[Chubut Province]], [[Argentina]]. The [[type species|type]] and only species is '''''Asfaltovenator vialidadi'''''.
== Discovery ==
Line 16:
In 2019, the type species ''Asfaltovenator vialidadi'' was named and described by Oliver Walter, Mischa Rauhut and Diego Pol. The generic name combines a reference to the Cañadón Asfalto with a [[Latin]] ''venator'', "hunter". The [[specific name (zoology)|specific name]] honours the ''Dirección Nacional de Vialidad'', for assisting the ''Museo Paleontológico "Egidio Feruglio"'' in recovering the fossil.<ref name="Rauhut2019"/>
''Asfaltovenator'' is only known from the [[holotype]] specimen '''MPEF PV 3440''', which was found in a layer of the Cañadón Asfalto Formation which dates from the late [[Toarcian]] to the [[Bajocian]], being latter fully constrained to 179-178 million years (Middle
==Description ==
Line 23:
''Asfaltovenator'' was a fairly large animal similar in size to ''Allosaurus'', with the holotype skull being {{cvt|75|-|80|cm|ft}} in length and the total body length being estimated at {{cvt|7|-|8|m|ft}}.<ref name="Rauhut2019"/>
The describers indicated a number of distinguishing traits. Some of these are [[autapomorphies]], unique derived characters. The premaxillary teeth have large serrations on the rear edge but only minute serrations on the front edge. The skull shows features shared with megalosauroids, like an enlarged foramen above the second premaxillary tooth (also found in the Neotheropods ''[[Dilophosaurus]]'', ''[[Dracovenator]]'', and in the Coelurosaur ''[[Proceratosaurus]]''), unfused paradental plates (also observed in various theropods), and the lack of a medial palatal shelf extending posteriorly from the anteromedial process (seen in ceratosaurs and some early-diverging theropods). Beyond that, the skull displays several characteristics commonly found in allosauroids, such as an anteroventral narial fossa in the premaxilla (also present in the Megalosauroids ''[[Dubreuillosaurus]]'', ''[[Marshosaurus]]'', and ''[[Eustreptospondylus]]''), a moderate ventral extension of the antorbital fossa in the maxilla (also seen in [[Piatnitzkysauridae]]), a dorsoventral groove on the anterior surface of the lacrimal's ventral process (absent in ''[[Allosaurus]]'' but present in the Megalosauroids ''[[Wiehenvenator]]'', ''[[Monolophosaurus]]'', and ''[[Dubreuillosaurus]]''), a low supraantorbital crest in the lacrimal (also in ''[[Afrovenator]]''), and a posteroventral process in the quadratojugal (also observed in some tyrannosaurids and abelisaurids).<ref name=":0">{{Cite journal |last=Cuesta |first=E. |last2=Pol |first2=D. |last3=Rauhut |first3=O.W.M. |date=2024 |title=‘Going around in the head’ of Asfaltovenator: new data on the skull of the type specimen of the Patagonian allosauroid (Early Jurassic) |url=https://www.nhm.uio.no/english/research/events/conferences/EAVP2024/eavp-abstracts-2024-volume-complete-final.pdf |journal=EAVP2024 Abstract book and programme. |volume=18 |issue=1 |pages=10-11}}</ref> The exoccipital bone of the rear skull shows distinctive horizontal ridges between the paraoccipital process and the [[foramen magnum]]. On the third and fourth neck vertebrae, the [[neural spine]]s are triangular and swept backwards. The eleventh and twelfth back vertebrae possess an additional forward ridge on the underside of the diapophysis, the process for the articulation facet of the top rib head.<ref name="Rauhut2019"/>
== Classification ==
Line 51:
|2=[[Carcharodontosauridae]][[File:Carcharodontosaurus.png|120px]]}} }} }} }} }} }} }} }} }} }} }}
In 2024, the describers of ''[[Alpkarakush]]'' included ''Asfaltovenator'' within [[Allosauridae]] based on their phylogenetic analysis.<ref>{{Cite journal |last1=Rauhut |first1=Oliver W M |last2=Bakirov |first2=Aizek A |last3=Wings |first3=Oliver |last4=Fernandes |first4=Alexandra E |last5=Hübner |first5=Tom R |date=2024-08-01 |title=A new theropod dinosaur from the Callovian Balabansai Formation of Kyrgyzstan |journal=[[Zoological Journal of the Linnean Society]] |language=en |volume=201 |issue=4 |doi=10.1093/zoolinnean/zlae090 |issn=0024-4082}}</ref> The ongoing osteology notified also this position, finding it along ''[[Allosaurus]]'' in some trees or as an early branching Allosauroid of some kind, were a monophyletic Carnosauria is not recovered anymore and the other Cañadón Asfalto Tetanurans aren´t closely related.<ref name=":0" />
== References ==
| |||