Cranial articulation of hyomandibula together with lean anterodorsal process abutting weakened ridge towards the sphenotic before hyomandibular part; a lot of time, lightly round condyle expressing which have hyomandibular part of sphenotic and you will pterotic; and brief, vertically-truncate posterodorsal body showing which have pterotic trailing hyomandibular part

Articulation webpages towards the basioccipital getting ossified Baudelot’s ligament elevated and rugose. Exoccipital weakly sutures having basioccipital, prootic, pterotic and epioccipital; contributing small dorsal strategy to cranial articulation which have Baudelot’s tendon; vagal foramen high, game, ventrally directed, according to a vertical from the prior side of basioccipital-Baudelot’s tendon mutual. Baudelot’s ligament from supracleithrum ossified and you can big; round in point medially close experience of basioccipital and exoccipital. Exoccipital and you may epioccipital building clear posterolateral place off braincase one vertically buttresses extended cranial articulation out-of pteroticsupracleithrum. Anterolateral deal with out of epioccipital concave and you can weakly sutured so you’re able to pterotic. Posterior prevent out of pterotic wing produced and you may extended ventral so you can cranial articulation out-of supracleithrum. Ventral https://datingmentor.org/single-women-dating-san-jose-california/ side of supraoccipital posterior process having solid average vertical keel.

Suspensorium ( Fig. 5k, l). Hyomandibula broad and you can deep, sutured to help you preopercle thru lateroposterior flange, and you will metapterygoid thru broad prior process; anteriorly sutured and you may posteriorly synconchondrally jointed to help you quadrate. Lateral deal with which have reduced, oblique increase anywhere between prior procedure and you will preopercular flange, marking attachment limit from inner bundles regarding adductor mandibulae muscles. Lower crest toward medioposterior boundary ventral in order to pterotic articulation, if you don’t zero expanded revealing procedure or strength provider crests dorsal in order to opercle condyle. Opercle condyle mainly based somewhat more than midpoint with the rear en of facial tunnel situated for the anterior epidermis out-of adductor muscle crest in the level of opercle condyle; medial foramen away from facial tunnel anteriorly discovered over adductor arcus palatini crest. Medial face having situated vertical and you can crescentic adductor arcus palatini mark much more common than in modern P. hemioliopterus ( Fig. 5m) it is figure and you will location comparable.

Preopercle sutured in order to quadrate plus hyomandibula; lateral face shallowly concave creating fossa getting rear chapters of adductor mandibulae muscle mass; posterior margin raised inside the a smooth curve and you may almost certainly with nerve canal however, no discernable lateralis skin pores; zero proof outside foramen for symplectic canal, but medial foramen from symplectic canal expose between quadrate and you may preopercle.

Quadrate lateral deal with generally shallowly concave; anteroventral blade generally sutured to metapterygoid; mandibular condyle broad and you will strongly bilobed flanking main saddle, medial lobe of condyle braced by straight buttress.

Weberian advanced lacking common middle-dorsal straight lamina; sensory arch-spine cutting-edge incompletely kept however, anteriorly projecting to get hold of supraoccipital and exoccipitals

Prior vertebrae ( Fig. 3b). Very first centrum articulated to basioccipital and you can deeply sutured in order to substance or Weberian cutting-edge centrum (2-4). Aortic groove open along midventral range, flanked by the reduced synchronous ridges together earliest and you will compound centra; damaged in advance of centrum from vertebra 5. Indistinct items of tripus and you can lower operating-system suspensorium remain in put; prior limbs out of transverse processes satisfy material centrum in the right-angle, broad and thickened sideways, broadly contacting ventral articulation flange off supracleithrum; vertebra 5 indeterminate.

Pectoral girdle ( Figs. 5 elizabeth, f, g). Dorsal showing process of cleithrum bifid, prior limb longest, and full equivalent in proportions to postcleithral processes; postcleithral process deep and you can almost equilaterally triangular, coarsely ornamented particularly collectively ventral and ventrolateral edges lateral so you’re able to showing fossa out-of pectoral lower back. From inside the ventral take a look at external pouch out of cleithrum when you look at the transverse positioning having rear restrict from revealing fossa out of pectoral lower back. Mesocoracoid perhaps not kept but increased facial skin near dorsal edge of coracoid reveals its articulation site. Coracoid keel strongly raised proximally, extending about midway in order to pectoral symphysis; coracoid keel divides jointed horizontal limbs off cleithrum and you can coracoid with the equivalent halves; a couple synchronous ridges run into the midline lateral branches regarding coracoid.