Cranial articulation regarding hyomandibula and additionally thinner anterodorsal techniques abutting poor ridge on sphenotic before hyomandibular part; much time, gently rounded condyle revealing having hyomandibular part of sphenotic and pterotic; as well as brief, vertically-truncate posterodorsal surface showing having pterotic about hyomandibular facet
Articulation web site towards basioccipital getting ossified Baudelot’s ligament elevated and rugose. Exoccipital weakly sutures that have basioccipital, prootic, pterotic and you may epioccipital; adding short dorsal technique to cranial articulation with Baudelot’s ligament; vagal foramen large, round, ventrally led, based on a straight from anterior side of basioccipital-Baudelot’s ligament joint. Baudelot’s ligament of supracleithrum ossified and heavier; round in the part medially close contact with basioccipital and you will exoccipital. Exoccipital and you may epioccipital forming sharp posterolateral area off braincase one vertically buttresses extended cranial articulation out of pteroticsupracleithrum. Anterolateral deal with regarding epioccipital concave and you will weakly sutured in order to pterotic. Posterior avoid away from pterotic wing brought and prolonged ventral to cranial articulation from supracleithrum. Ventral side of supraoccipital posterior processes that have strong average straight keel.
Suspensorium ( Fig. 5k, l). Hyomandibula broad and you may deep, sutured so you’re able to preopercle thru lateroposterior flange, and you can metapterygoid thru greater anterior processes; anteriorly sutured and you may posteriorly synconchondrally jointed so you can quadrate. Horizontal face that have lowest, oblique rise ranging from anterior process and you may preopercular flange, establishing accessory restriction out of interior bundles out of adductor mandibulae strength. Reduced crest on the medioposterior line ventral in order to pterotic articulation, or even zero enlarged articulating techniques otherwise strength provider crests dorsal in order to opercle condyle. Opercle condyle oriented a bit more than midpoint for the rear en away from face tunnel located to your prior skin off adductor muscle tissue crest at quantity of opercle condyle; medial foramen out-of face canal anteriorly discovered above adductor arcus palatini crest. Medial deal with having located vertical and you will crescentic adductor arcus palatini scar far more popular compared to modern P. hemioliopterus ( Fig. 5m) but is contour and position similar.
Preopercle sutured so you’re able to quadrate along with hyomandibula; lateral deal with shallowly concave forming fossa to possess rear parts of adductor mandibulae strength; posterior margin elevated during the a gentle contour and you may more than likely that have nerve tunnel but no discernable lateralis skin pores; zero proof external foramen to own symplectic tunnel, however, medial foramen off symplectic canal present ranging from quadrate and you may preopercle.
Quadrate lateral deal with mostly shallowly concave; anteroventral knife generally sutured to help you metapterygoid; mandibular condyle broad and you may strongly bilobed flanking main seat, medial lobe from condyle braced by vertical buttress.
Weberian state-of-the-art without preferred mid-dorsal straight lamina; sensory arch-lower back advanced incompletely kept but anteriorly projecting to make contact with supraoccipital and you may exoccipitals
Anterior spinal vertebrae ( Fig. 3b). Basic centrum articulated to basioccipital and you can deeply sutured in order to material otherwise Weberian advanced centrum (2-4). Aortic groove unlock collectively midventral range, flanked by reasonable parallel ridges together basic and you will material centra; broken ahead of centrum out of vertebra 5. Indistinct items of tripus and you may lowest operating system suspensorium remain in set; prior limbs from transverse procedure fulfill substance centrum in the right-angle, broad and you may thickened sideways, broadly calling ventral articulation flange off supracleithrum; vertebra 5 indeterminate.
Pectoral girdle ( Figs. 5 e, f, g). Dorsal articulating means of cleithrum bifid, anterior limb longest, and you can full comparable sizes so you’re able to postcleithral process; postcleithral process strong and you will nearly equilaterally triangular, coarsely ornamented especially with each other ventral and you may ventrolateral corners lateral in order to showing fossa out of pectoral lower back. From inside the ventral evaluate external pouch of cleithrum from inside the transverse alignment which have posterior limitation out of showing fossa of pectoral spine. Mesocoracoid perhaps not maintained but increased facial skin near dorsal edge of coracoid shows its articulation website. Coracoid keel highly increased proximally, extending about halfway in order to pectoral symphysis; coracoid keel divides jointed horizontal branches of cleithrum and coracoid for the equal halves; several synchronous ridges work on into midline horizontal limbs away from coracoid.