Dubreuillosaurus valesdunensis

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Dubreuillosaurus valesdunensis
Tweet Topic Started: Aug 30 2012, 08:46 PM (3,063 Views)
Carcharadon	Aug 30 2012, 08:46 PM Post #1
*Shark Toothed Reptile* Posts: 4,958 Group: Members Member #419 Joined: Jul 1, 2012	Dubreuillosaurus valesdunensis Temporal range: Middle Jurassic Phylum: Chordata Class: Reptilia *clade: Dinosauria clade: Theropoda Family: †Megalosauridae Genus: †Dubreuillosaurus* Allain, 2005 Dubreuillosaurus is a genus of carnivorous dinosaur from the middle Jurassic Period. It was a megalosaurid theropod. Its fossils were found in France. The type species, D. valesdunensis, was originally assigned to the genus Poekilopleuron as P. valesdunensis. Ronan Allain in 2005 created the new genus name Dubreuillosaurus for this species. It was estimated to be at around 9 metres (30 ft) in length, and had an unusually low and long skull, with the length of the skull being three times the height. Edited by Taipan, Sep 5 2012, 02:49 PM.



Jinfengopteryx	Jan 1 2013, 12:25 AM Post #2
Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer Posts: 12,485 Group: Members Member #363 Joined: Jun 8, 2012	There's more data: The Holotype (MNHN 1998-13) is known from an almost complete skull, the rest of the skeleton is rather fragmentary. The almost complete skull makes it one of the most important discoverys of european theropods. Not just that, it lived in almost exact the same time as Megalosaurus and Poekilopleuron and it can help to clarify their taxonomic relationships. As Ronan Allain (2002, 2005) noted, this megalosaur was likely most closely related to Torvosaurus, Eustreptospondylus and Afrovenator (this one is probably the closest, as their maxilias are very similar), because it shares most features with them. According to the same author (Ronan Allain), accurate comparisions with Poekilopleuron are difficult, the known parts of Dubreuillosaurus' postcranium do not overlap with those of Poekilopleuron, but because Dubreuillosaurus' postcranium is only known from fragments, we can't say it for sure. Also, Dubreuillosaurus' best preserved part of the body is the skull, but Poekilopleuron shows a lack of skull material, so here the comparision too is very hard. There's also a Megalosaurid known from anterior skull parts, called Duriavenator hesperis(Waldman 1974), it's known skull parts are comparable to those of Dubreuillosaurus valesdunensis (Benson 2008). I've got the information from Carrano's (2012) theropod summary. Here the link: http://dx.doi.org/10.1080/14772019.2011.630927 This is paywalled, somewhere I've got it for free, I don't remember where. Edited by Jinfengopteryx, Jan 1 2013, 12:33 AM.



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