Cranial articulation out of hyomandibula in addition to thin anterodorsal techniques abutting weak ridge towards sphenotic in front of hyomandibular part; a lot of time, carefully round condyle expressing with hyomandibular part of sphenotic and you may pterotic; and additionally small, vertically-truncate posterodorsal surface revealing having pterotic at the rear of hyomandibular aspect

Articulation webpages towards basioccipital to possess ossified Baudelot’s ligament increased and you may rugose. Exoccipital weakly surgical stitches that have basioccipital, prootic, pterotic and you can epioccipital; contributing quick dorsal strategy to cranial articulation with Baudelot’s tendon; vagal foramen high, rounded, ventrally led, considering a straight through the prior edge of basioccipital-Baudelot’s ligament joint. Baudelot’s ligament off supracleithrum ossified and you will hefty; round inside the area medially near exposure to basioccipital and exoccipital. Exoccipital and you may epioccipital forming clear posterolateral place off braincase one to vertically buttresses longer cranial articulation off pteroticsupracleithrum. Anterolateral deal with out of epioccipital concave and you may weakly sutured to pterotic. Rear prevent regarding pterotic wing brought and you can extended ventral to cranial articulation from supracleithrum. Ventral edge of supraoccipital posterior procedure which have solid median straight keel.

Suspensorium ( Fig. 5k, l). Hyomandibula wider and strong, sutured so you’re able to preopercle thru lateroposterior flange, and metapterygoid via large anterior techniques; anteriorly sutured and posteriorly synconchondrally jointed to quadrate. Horizontal face with lower, oblique rise ranging from prior techniques and preopercular flange, marking attachment limitation off inner packages from adductor mandibulae muscle. Low crest to your medioposterior edge ventral to pterotic articulation, if not no increased expressing processes otherwise muscle mass resource crests dorsal in order to opercle condyle. Opercle condyle dependent somewhat over midpoint toward posterior dentro de regarding face canal located into prior epidermis from adductor muscle tissue crest at amount of opercle condyle; medial foramen out of face canal anteriorly located more than adductor arcus palatini crest. Medial face which have situated straight and you can crescentic adductor arcus palatini mark far more preferred than in progressive P. hemioliopterus ( Fig. 5m) it is shape and you can positioning equivalent.

Preopercle sutured in order to quadrate and hyomandibula; horizontal face shallowly concave creating fossa for rear chapters of adductor mandibulae muscles; posterior margin elevated during the a gentle bend and you will probably having sensory tunnel however, zero discernable lateralis skin pores; zero proof outside foramen to own symplectic canal, however, medial foramen away from symplectic canal establish anywhere between quadrate and preopercle.

Quadrate horizontal face generally shallowly concave; anteroventral blade generally sutured in order to metapterygoid; mandibular condyle large and you may highly bilobed flanking central saddle, medial lobe out-of condyle braced by the vertical buttress.

Weberian advanced without having popular mid-dorsal vertical lamina; sensory arch-lower back cutting-edge incompletely preserved however, anteriorly projecting to contact supraoccipital and you may exoccipitals

Anterior spinal vertebrae ( Fig. 3b). Very first centrum articulated so you’re able to basioccipital and significantly sutured to help you substance or Weberian complex centrum (2-4). Aortic groove unlock together midventral line, flanked by the reduced parallel ridges with each other first and substance centra; broken ahead of centrum off vertebra 5. Indistinct pieces of tripus and lower operating system suspensorium remain in put; prior branches out-of transverse techniques see material centrum in the right angle, broad and you may thickened laterally, generally getting in touch with ventral articulation flange out of supracleithrum; vertebra 5 indeterminate.

Pectoral girdle ( Figs. 5 e, f, g). Dorsal showing procedure of cleithrum bifid, anterior limb longest, and complete comparable in size to help you postcleithral process; postcleithral processes strong and you may almost equilaterally triangular, coarsely ornamented specifically together ventral and you may ventrolateral sides lateral to help you revealing fossa away from pectoral lower back. For the ventral take a look at external pouch regarding cleithrum inside transverse positioning having rear restriction off articulating fossa from pectoral spine. Mesocoracoid not managed but raised surface near dorsal side of coracoid shows its articulation webpages. Coracoid keel firmly elevated proximally, stretching on the midway to pectoral symphysis; coracoid keel splits jointed horizontal limbs off cleithrum and you will coracoid toward equal halves; two parallel ridges run on midline lateral branches out-of coracoid.