Soumyasaurus aenigmaticus gen. nov., sp. nov.
Volkan SarÄgÃl, Federico AgnolÃn & Sankar Chatterjee (2018).Â
Description of a multitaxic bone assemblage from the Upper Triassic Post Quarry of Texas (Dockum group), including a new small basal dinosauriform taxon.Â
Historia Natural, Tercera Serie 8 (1): 5â24.
A bone assemblage composed of intermixed small cranial and postcranial fragments from the Post Quarry of Texas, USA, is described. The skeletal elements represent multiple individuals of different taxa, including a partial dorsal column assigned to Vancleavea campi and an incomplete dentary referred to a new genus and species of a small-sized basal dinosauriform. Ankylothecodont dental implantation of the dinosauriform dentary bears strong resemblance to silesaurids. A fragmentary archosauromorph braincase is another intriguing element of the assemblage; it displays a striking contrast of a derived otoccipital on a plesiomorphic basioccipital. Poor preservation prevents more conclusive taxonomic assignments for the rest of the skeletal elements. The observed attrition and entangling in this bone assemblage reflect the complexities of the Dockum land tetrapod taphonomy.
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Wachtlerosaurus ladinicus gen. nov. & sp. nov.
Thomas Perner (2018)
A new interesting archosaur from the Ladinian (Middle Triassic) of the Dolomites (Northern Italy) Preliminary report.
In: Thomas Perner; Michael Wachtler. Some new and exciting Triassic Archosauria from the Dolomites (Northern Italy).Â
Dolomythos Museum, Innichen, South Tyrol, Italy; Oregon Institute of Geological Research, Portland, OR, (USA)
A small-sized archosaur from the Ladinian (Fassanian-Langobardian) stage of the Southern Dolomites is described. The skeleton is mostly complete; the skull is characterized by its powerful teeth, the ribs are slender, and the prominent pelvis including the ilium, ischium, and pubis suggests a classification in an early group of avian-line archosaurs. Fore limbs and hind limbs are equally long. Since very little is known about the phylogenetically earliest members of the Avemetatarsalia, this new animal helps to fill a gap in the knowledge. It will be named Wachtlerosaurus ladinicus gen. nov. sp. n.
NOTE: The exact status of this taxon is a bit unclear and the official full volume has apparently not been published yet.