In the living animal a ligament unites the twopostorbital processes.
It is firmly united in front to the maxillae, and behind meets the zygomatic process of the squamosal, being drawn out dorsally into a short =postorbital process= at the point of meeting.
There is no postorbital process to the frontal, and the orbit is completely confluent with the temporal fossa.
Manatus sends up a strong process, which nearly or quite meets the postorbital process of the frontal, completing the orbit.
Postorbital processes are developed on the frontal (fig.
The frontal is large and broad and drawn out into a small postorbital process.
The postorbital bar is complete, and the orbit is prominent and nearly circular.
The jugal is united below to the transpalatine, and the two bones together form an outgrowth, which meeting that from the postfrontal forms the =postorbital bar=, and separates the orbit from the lateral temporal fossa.
A postorbital process appears on the jugo-squamosal suture and is here called postorbital process of the zygoma.
Y; postorbital stripe (yellow in preservative) connected to eye by narrow isthmus and continuous with neck stripe to shoulder.
There seems to be no reliable published record of the color of the postorbital mark in living examples of P.
In all samples of ten or more specimens, some toads have the supraorbital and postorbital crests forming a sharp angle, some have the crests forming a curve, and some have an intermediate condition.
Those from Michoacan have low and narrow cranial crests; in about one-half of the specimens the occipital crest exists only as a row of tubercles, and in some the postorbital and suborbital crests are barely discernible.
In two specimens there are only scattered dark flecks on the dorsum; in the third there is a dark postorbital stripe, a dark lateral stripe, and four narrow transverse bands on the body.
The top of the head is pale olive-brown; a dark brown postorbital stripe extends from the eye to the posterior edge of the last upper labial.
The temporal arose from the upper rim of the temporal opening, from the lateral wall of the skull behind the postorbital strut, and from the dorsal roof of the skull.
In Thrinaxodon the dorsal and ventral postorbital processes, arising from the postorbital and jugal bones respectively, nearly meet but remain separate.
Two low ridges extend posteriorly from the postorbital process to the anterior end of the sagittal crest and correspond to ridges in similar position in Thrinaxodon.
Additionally, thepostorbital region of Captorhinus is relatively longer than that of Protorothyris, a specialization that has increased the length of the chambers within.
At the back of the orbit of Thrinaxodon, the postorbitalprocess of the jugal extends posterodorsally.
It arises immediately in front of the pineal foramen from the confluence of bilateral ridges that extend posteriorly and medially from the base of the postorbital bars.
In the two former genera the metapterygoid region of the arch is moreover continuous with the pterygo-quadrate, and articulates with the postorbital process of the auditory region of the skull.
M1 and more than distance between anterior palatine foramen and anterior margin of tympanic bulla (nearly equal in each instance); postorbital breadth less than length of upper premolars and greater (7.
The skulls of male frenata, perotae and macrophonius are much larger, heavier, and are decidedly more angular with more constricted postorbital region the least width of which is less than the length of the upper premolars.
Postorbital processes, mastoid processes, and sagittal crest not so well developed.
M1 and less than distance between anterior palatine foramen and anterior margin of tympanic bulla; postorbital breadth more than width of basioccipital measured from medial margin of one foramen lacerum posterior to its opposite.
Both males and females of latirostra have a generally smaller skull with relatively broader interorbital and postorbital parts and the tympanic bullae are relatively larger, rounder and more inflated.
The postorbital breadth is actually a third more than in fallenda.
Also there is a tuft of white hairs at the anterodorsal margin of each ear, scattering white hairs suggesting a postorbital bar on each side of the head, and a patch of white hairs on the mid-dorsal line behind the ears.
Dorsally the origin is bounded by the base of the postorbital process and ventrally by the temporal process.
The fibers converge upon a tendon that passes beneath the postorbital ligament and runs anteriorly among the fibers of pars profundus.
B Anterior margin of mesopterygoid fossa even with plane of posterior wall of M3; postorbital bar weakly developed; anteroposterior occlusal length of M3 equal to, or less than, combined length of M1 and M2.
B' Anterior margin of mesopterygoid fossa decidedly behind plane of posterior wall of M3; postorbital bar strongly developed; anteroposterior occlusal length of M3 more than combined length of M1 and M2.
As a result the width across postorbital processes is contained only about three times in occipito-nasal length, as opposed to nearly four times in the related species.
The concave anterior margin bears pores of thepostorbital part of the infraorbital line.
The Opistharthri (Hexanchidae) have this structure articulated with the postorbital part of the skull.
In Dicranodus texensis the palato-quadrate articulates with the postorbital process of the cranium, as in the Hexanchidae, and the hyomandibular is slender.
The bodies are moderately elongate, not eel-shaped, and the palato-quadrate articulates with the postorbital part of the skull.
There are six or seven branchial arches, and in the typical forms (not in Chlamydoselachus) the palato-quadrate or upper jaw articulates with the postorbital region of the skull.
Similar results were obtained by using the regression of postorbital length on standard length, and could have been obtained by using other proportional measurements.
Graphic analysis of head-depth, postorbital length of head and predorsal length of Hybopsis gracilis, expressed as thousandths of standard length.
Belodon has preorbital vacuities and postorbital vacuities, but the orbit of the eye is never large, as in Pterodactyles.
In the skull the frontals are broad, and there are long {464} postorbital processes.
It is to be distinguished from most other Squirrel-like creatures by the fact that there is no postorbital process to the frontal.
The Ethiopian Ground Squirrels, genus Xerus, have a more elongated skull than Sciurus, and the postorbital processes are shorter.
The postorbital processes of the frontals are totally wanting--there are not even the traces to be seen in Anomalurus.
The orbit is hardly ever completely shut off by bone, though the postorbital process of the frontal sometimes approaches the corresponding upward process of the zygomatic arch.
It has a less inflated bulla, and slightly more pronounced postorbitalprocesses than Castor.
Pelage dark, near Wood-Brown or Cinnamon; postorbitalregion of skull constricted (about 7.
Postorbital processes of the neurocranium are shown in dotted outline.
Each of these postorbital processes, seen from beneath, appears to be the lateral extension of a shallow groove beginning near the midline.
Laterally the parietal meets the medial angle of the postorbital and the medial border of the supratemporal.
The postorbital meets the anterolateral corner of the parietal for a distance of 0.
Reduction of bones at the back of the skull seems to have eliminated any dermal elements posterior to the squamosal, while enlargement of the orbit has removed most of the postorbital series, leaving the squamosal as the only cheekbone.
Medially, the concave margin of the postorbital meets the supratemporal for about 3.
Near the anteroventral edge of the squamosal there is a small pit, probably related to a postorbital sensory pore in the skin.
Further, the base of the postorbitalprocess of the frontal usually is narrower (relative to the length of the process) in the subgenus Neotamias but there is a gradation in this feature in Neotamias culminating in the species E.
Relative width of the | narrow to | | postorbital process at base.
The postorbital process is broader at the base in the subgenus Eutamias and in the genus Tamias than in most species of the subgenus Neotamias.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "postorbital" in a variety of sentences. We hope that you will now be able to make sentences using this word.
