Skull anatomy ofMussaurus patagonicus(Dinosauria: Sauropodomorpha) from the Late Triassic of Patagonia

Redescription of a Nearly Complete Skull ofPlateosaurus(Dinosauria: Sauropodomorpha) from the Late Triassic of Trossingen (Germany)

“…3). The main premaxillary body is slightly longer anteroposteriorly than dorsoventrally, as in Anchis- aurus polyzelus (Galton, 1976;Yates, 2010), Thecodontosaurus caducus (Yates, 2003a) or Yunnanosaurus huangi but unlike Mussaurus patagonicus (Pol and Powell, 2007). The posterodorsal region of the lateral surface of the premaxilla contains a D-shaped recessed surface that borders anteriorly the narial opening and constitutes the narial fossa ( fig.…”

“…The ventralmost posterior process of the premaxilla overlaps the lateral half of this platform; the medial half of the platform contacts the vomer. The anterior end of the maxilla is subquadrangular in lateral view, as in other basal sauropodomorphs like Riojasaurus incertus (Bonaparte and Pumares, 1995), Mussaurus patagonicus (Pol and Powell, 2007), and Aardonyx celestae . It consists of a vertical mediolaterally compressed surface.…”

“…The dorsal margin of the main body of the premaxilla forms a sharp edge that anteroventrally slopes to form an angle of 35° with the alveolar margin of the tooth row, an angle that is indicative of a relatively low snout as in Yunnanosaurus huangi but unlike forms such as Unaysaurus tolentinoi (Leal et al, 2004), Mussaurus patagonicus (Pol and Powell, 2007), and Aardonyx celestae . At the anterior end, this margin curves further ventrally to form a blunt lateral profile in the anterior end of the snout.…”

New Bathonian (Middle Jurassic) sauropod remains from the Valtos Formation, Isle of Skye, Scotland

“…Certain characters, such as the tooth shape, the presence of denticles, the shape of the wear facets, and the form of the enamel wrinkling have been used in sauropod taxonomy (Holwerda et al 2015). Although wrinkling is considered a synapomorphic character of Eusauropods (Holwerda et al 2015), it is apparent that it also occurred in basal sauropodomorphs, such as Anchisaurus polyzelus (Wilson & Sereno 1998, Pol & Powell 2007.…”

Wachholz, a new exquisite dinosaur-bearing fossiliferous site from the Upper Triassic of southern Brazil

“…In quite rare and fortunate exceptions, Norian dinosaurs were recovered in association with such degree of articulation. Actually, so far basically only Coelophysis bauri (Cope, 1887) from the Ghost Ranch, New Mexico (Schwartz and Gillette, 1994), the "Plateosaurus bonebed" from Central Europe (Sander, 1992) and the Mussaurus skeletons recovered from the Laguna Colorada Formation, Argentina (Pol and Powell, 2007;Otero and Pol, 2013). …”