On rear top, an enthusiastic articular body with the postorbital variations the right direction that have the newest frontal–parietal articular edge

On rear top, an enthusiastic articular body with the postorbital variations the right direction that have the newest frontal–parietal articular edge

The brand new postfrontal was a small, thickened, triangular feature which have a great sculptured dorsal epidermis noted that have grooves and pits, that’s commonly retrieved articulated toward front (Figures 4i, j). Inside the medial check, there clearly was an effective triangular and you may rugose articular body chatki ne iЕџe yarar that articulates that have new front and parietal; it suture try straight in dorsal see. The anterolateral line within triangular ability was effortless and you may deeply concave because variations an element of the orbital margin and you can the latest relevant orbital fossa to the ventral facial skin. New postorbital are omitted from the supratemporal fenestra because of the junction of your own parietal in addition to postorbital (Data 3a, b).

5.dos.8 Prefrontal

This new prefrontal is actually formed like the number “7” inside the lateral view which have a definite rugose dorsal rim one to articulates medially on the prior part of the front (Shape 4l). Brand new rear portion of the ventral processes forms the latest anterodorsal margin of orbit and has now a soft, posterolaterally facing, and you may a little concave surface creating a distinct orbital fossa. The new anterior margin of your own ventral procedure is actually rugose and associations the fresh posterior portion of the lacrimal. There was a distinct groove on lobby of a good rear projection of lacrimal ventral for the grooved dorsal rim. The fresh dorsal rim methods somewhat prior to that particular articulation. The brand new prefrontal away from Roentgen. callenderi lacks brand new ventromedial procedure that gets to brand new ectopterygoid discover into the crocodylomorphs and also at least some aetosaurs (elizabeth.g., L. meadei, S. robertsoni Gower & Walker, 2002 ; Nesbitt, 2011 ).

5.dos.9 Jugal

This new jugal is triradiate with prior, posterodorsal, and you will posterior process (Data 4m, n). The latest horizontal surface of your jugal was ornamented which have an excellent rugose pattern away from pits and you can elongate grooves, together with very distinct ornamentation is found towards chief human anatomy of jugal to the a standard anteroposteriorly trending ridge. That it wider ridge with the horizontal face is an extension out-of the latest maxillary ridge and you may stretches on anteriormost portion into the rear idea. The anterodorsal margin is actually concave for the lateral evaluate and you may variations the fresh new whole posteroventral side of the newest orbit (Figure 4n). The latest ventral margin is straight in the lateral view. The latest anterior techniques and it has a beneficial triangular slot toward horizontal epidermis one to receives the posterior procedure of brand new maxilla (get a hold of over); this position is positioned into wider ridge to your lateral skin. Dorsal into brief position was a tiny dorsolaterally facing basin you to gets the ventral margin of one’s lacrimal, thus leaving out the fresh new jugal out of contribution into the antorbital fenestra (Profile 4n).

The fresh new posterior procedure of new jugal tapers and you may suits to the an excellent position in the lateral facial skin of the quadratojugal. This new dorsal facial skin for the process forms the latest anteroventral margin off the brand new horizontal temporal fenestra, plus the posterior suggestion of jugal can be obtained at the amount of the newest posterior margin of your lateral temporal fenestra.

The brand new posterodorsal procedure variations the fresh new highest portion of the jugal with the new tapered apex being some recurved posteriorly. Which projection underlies this new rear the main margin of the postorbital; it limited overlap almost excludes the brand new postorbital of entering the lateral temporal fenestra (Figure 3b). The newest horizontal facial skin of posterodorsal processes contains a light longitudinal sulcus which is almost dorsoventrally oriented, that’s an extension of the sulcus towards horizontal skin of your postorbital (Shape 3b). This new anterior part of the posterodorsal procedure meets the ventral skin of one’s postorbital, searching an elongate anteroventral process of the postorbital from inside the a distinct groove with the medial body of the jugal. An excellent ventrally projecting ridge comes from the fresh new ventral part of so it groove and you will meets the new distinct posterolaterally up against pedicel one to articulates which have new ectopterygoid (Figure 4n). A shallow dorsal fossa can be found dorsal to your epidermis out-of articulation towards the ectopterygoid.

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