5.dos.10 Quadratojugal
A slight ridge to the posterodorsal margin of your own dorsal procedure articulates into the a position towards anteroventral osal. Rear to this there clearly was a shallow fossa that is overlapped by anterolateral edge of the newest quadrate. New ventral suggestion of the fossa is the prior border from the newest quadrate foramen. This new posteroventral spot of one’s quadratojugal versions a continuing epidermis having the new lateral part of the quadrate, installing on good fossa into horizontal margin of your own second element. Brand new quadratojugal models the fresh new posteroventral place of one’s horizontal temporal fenestra in the Roentgen. callenderi.
Anteriorly, the newest tapered rear procedure of the fresh jugal inserts toward good triangular slot to your lateral body of your quadratojugal (Contour 4o). This style of articulation is additionally present in P. kirkpatricki (TTU P-9002; Weinbaum, 2011 : fig. 13). The same articulation style occurs in An effective. ferratus and you can Paratypothorax andressorum (SMNS 19003; Schoch & Desojo, 2016 ), where a sub-triangular posterior process of the latest jugal inserts into the an embayment in the this new anteroventral margin of one’s quadratojugal ventral toward lateral temporary fenestra. Throughout these taxa, a small anteroventral means of the brand new quadratojugal underlaps the new jugal (Schoch, 2007 ). A similar articulation and additionally happens in the newest doswelliid archosauriform Rugarhychos sixmilensis (Wynd mais aussi al., 2020 ) suggesting so it profile county is plesiomorphic.
5.dos.11 Postorbital
The latest postorbital is an excellent triradiate limbs that have an enthusiastic ornamented lateral epidermis and you may around three collection of process (Data 4q, r). Continue reading “This new L-formed quadratojugal is covered sideways by good rugose pattern like that the squamosal and you may jugal (Profile 4o)”