Here is the articulation epidermis towards the supraoccipital that’s most similar to what exactly is found in B
The newest parietal try an effective dorsoventrally heavy, “sickle-shaped” bone (when you look at the dorsal look at) which have an ornamented dorsal surface influence a beneficial patterning of incised grooves and you can pits just like that into front (Figures 4i, j). The new coordinated parietals are fully or partly coossified within the huge specimens (e.grams., PEFO 33787), whereas in the smaller specimens (elizabeth.grams., PEFO 34561, PEFO 34269) the newest parietal surgical stitches is discover.
The brand new midline margin of the parietal try upright that have an effective thickened articular surface for its sibling function, with striations and an increasing ridge and groove contact amongst the factors, due to the fact viewed into the front
Anterolaterally, the fresh parietal barely relationships new postfrontal rear to an ongoing articulation surface involving the front and you can postfrontal, together with postorbital is served by an incredibly slight experience of the newest parietal (Figure 3a). The newest medial longitudinal ridge for the dorsal surface of your own frontal continues posteriorly over the medial margin of one’s parietal. Hence, the brand new dorsal facial skin within midline of your own parietals possess good reasonable longitudinal furrow flanked by two ridges one to border the fresh new medial margins of the supratemporal fenestra similar to what is actually found in crocodylomorphs particularly D. grallator; however, as opposed to the condition in the D.