Cranial articulation out-of hyomandibula also slim anterodorsal techniques abutting weakened ridge on the sphenotic in front of hyomandibular facet; much time, lightly rounded condyle showing having hyomandibular facet of sphenotic and you will pterotic; along with quick, vertically-truncate posterodorsal skin expressing with pterotic about hyomandibular factors
Articulation site on the basioccipital for ossified Baudelot’s ligament raised and you will rugose. Exoccipital weakly sutures that have basioccipital, prootic, pterotic and you will epioccipital; contributing short dorsal process to cranial articulation which have Baudelot’s tendon; vagal foramen high, rounded, ventrally brought, according to a straight from the anterior edge of basioccipital-Baudelot’s tendon shared. Baudelot’s ligament out of supracleithrum ossified and you can big; bullet for the section medially close contact with basioccipital and exoccipital. Exoccipital and epioccipital building clear posterolateral place regarding braincase that vertically buttresses stretched cranial articulation out-of pteroticsupracleithrum. Anterolateral face off epioccipital concave and you may weakly sutured so you’re able to pterotic. Rear avoid from pterotic side produced and you may extended ventral in order to cranial articulation regarding supracleithrum. Ventral side of supraoccipital rear processes that have solid median vertical keel.
Suspensorium ( Fig. 5k, l). Hyomandibula large and strong, sutured so you’re able to preopercle thru lateroposterior flange, and you will metapterygoid via wide prior processes; anteriorly sutured and you will posteriorly synconchondrally jointed in order to quadrate. Lateral face which have low, oblique increase anywhere between anterior procedure and you can preopercular flange, establishing attachment restrict from inner bundles out-of adductor mandibulae muscle mass. Lower crest towards medioposterior boundary ventral in order to pterotic articulation, if you don’t no enlarged revealing processes or muscle tissue origin crests dorsal so you can opercle condyle. Opercle condyle dependent somewhat over midpoint to your posterior dentro de of facial tunnel centrally located for the prior facial skin away from adductor strength crest during the number of opercle condyle; medial foramen away from facial tunnel anteriorly located over adductor arcus palatini crest. Medial face having centrally located vertical and crescentic adductor arcus palatini scar a lot more prominent compared to modern P. hemioliopterus ( Fig. 5m) it is shape and you will location comparable.
Preopercle sutured so you’re able to quadrate also hyomandibula; lateral face shallowly concave building fossa to have posterior parts of adductor mandibulae strength; rear margin increased inside the a smooth bend and probably which have nerve canal however, no discernable lateralis pores; zero proof outside foramen for symplectic tunnel, however, medial foramen away from symplectic canal establish anywhere between quadrate and you will preopercle single men dating website Houstonlink.
Quadrate lateral deal with primarily shallowly concave; anteroventral knife generally sutured so you’re able to metapterygoid; mandibular condyle broad and you can firmly bilobed flanking central seat, medial lobe from condyle braced of the vertical buttress.
Weberian state-of-the-art not having well-known mid-dorsal straight lamina; neural arch-spine cutting-edge incompletely kept but anteriorly projecting to get hold of supraoccipital and you may exoccipitals
Prior vertebrae ( Fig. 3b). First centrum articulated so you can basioccipital and you will seriously sutured so you’re able to substance otherwise Weberian state-of-the-art centrum (2-4). Aortic groove unlock with each other midventral line, flanked by low synchronous ridges together very first and you may material centra; broken in advance of centrum from vertebra 5. Indistinct items of tripus and you will reduced operating-system suspensorium stay in put; prior limbs away from transverse processes satisfy material centrum on right angle, wide and you will thickened sideways, broadly calling ventral articulation flange off supracleithrum; vertebra 5 indeterminate.
Pectoral girdle ( Figs. 5 age, f, g). Dorsal expressing procedure of cleithrum bifid, prior limb longest, and you may total equivalent in proportions to help you postcleithral processes; postcleithral techniques deep and almost equilaterally triangular, coarsely ornamented specifically along ventral and you will ventrolateral corners horizontal to help you showing fossa regarding pectoral spine. From inside the ventral glance at outward bulge away from cleithrum in the transverse alignment that have posterior limitation from articulating fossa off pectoral back. Mesocoracoid not maintained but raised skin close dorsal edge of coracoid suggests the articulation website. Coracoid keel strongly elevated proximally, stretching throughout the midway to pectoral symphysis; coracoid keel divides jointed horizontal branches away from cleithrum and you can coracoid into equal halves; a couple synchronous ridges run to your midline horizontal branches from coracoid.