In the barb the premaxillary bones are much shortened, and their anterior portion is thicker than in the rock-pigeon, as is the lower part of the nasal bone.
The ascending branches of the premaxillary bones and the inner nasal processes are much shortened.
In the rock-pigeon, and in several domestic breeds, the edges of the lower jaw on each side come close up to the premaxillary bones, so that no open space is left.
Bagadotten carrier, stands in obvious relation to the curvature of the upper jaw, and more especially to the angle formed by the maxillo-jugal arch with the premaxillary bones.
Apparently in consequence of the branches of the premaxillary and of the inner processes of the nasal bones being somewhat upturned, the external orifices of the nostrils are upraised and assume a crescentic outline.
In both skulls the ascending branches of the premaxillary were very short, and in both the basal portion of the inner processes of the nasal bones were ossified together.
The surface of the frontal bone, on which the branches of the premaxillary rest, is very little depressed.
Skull, with the tips of the ascending branches of the premaxillary and with the nasal bones standing a little separate from each other; anterior margin of the frontal bones less depressed than usual.
The presence of a crest influences in some unknown way the development of the ascending branches of the premaxillary bone, and of the inner processes of the nasal bones; and likewise the shape of the external orifice of the nostrils.
In the Bagadotten the upper mandible is remarkably arched, and the premaxillary bones are proportionally broader.
Exactly as Weismann predicted the striping of the hawk-moth caterpillars and the human os centrale, Goethe predicted the formation of the skull from modified vertebrae, and the premaxillary bone in man.
The skull of the Dugong is distinguished by the stout premaxillary bones, which bear a tusk in the male.
It is believed from the presence of a suture on the upper surface of the premaxillary that the snout of the creature was tubular.
There is still the slight projection upon the premaxillary bones, but the nostril is directed more forwards than in Toxodon.
The rightpremaxillary and the left nasal bones are much larger than their fellows; indeed the right nasal is hardly present as a separate bone.
The chief differences from Molossus are that the premaxillary bones are separate in front or united by cartilage, and that the incisors may be three in the lower jaw.
The premaxillary bones are quite rudimentary, and are suspended from the nasal cartilages.
The maxillary and premaxillary bones are much produced, forming a rostrum tapering, narrow, compressed and much arched in the right whales.
The premaxillary and maxillary bones are largely developed, and contain the socket of the enormous tusks.
The nasal bones, together with the premaxillary and maxillary bones, form the general contour for the external apertures of the nostrils.
The premaxillary region is elongated and bent downwards, overlapping the very deep lower jaw, which is similarly bent down.
Sometimes the maxillary part is not developed and the sheath is incomplete posteriorly; sometimes this maxillary part is very slender and merely touches the premaxillary part.
The alary process of the premaxillary is vertical and concave posteriorly.
Ventrally, the premaxillary is connected to the prevomer by bony tissues.
The prevomer is joined to the premaxillary by cartilage.
The prevomer is short and separated anteriorly from the premaxillary and maxillary by cartilage.
Ventrally, the premaxillary is partially united to the prevomer by ossification.
Anteriorly the prevomer is connected to the maxillary-premaxillary articulation; posteriorly, the prevomer is separated from the sphenethmoid by cartilage.
Ventrally, thepremaxillary is united to the prevomers by partially ossified cartilage.
The alary process of the premaxillaryis small, concave posteriorly and vertical.
The alary process of the premaxillary is small, vertical, and slightly concave posteriorly.
Ventrally, the premaxillaryis completely separated from the prevomer by cartilage.
The prevomer is joined to the premaxillary by ossification.
In both skulls the ascending branches of the premaxillary were very short, and in both the nasal portion of the inner processes of the nasal bones were ossified together.
The skull of a crested, rumpless, white Turkish fowl was very slightly protuberant, and but little perforated; the ascending branches of the premaxillary were well developed.
In the Barb the premaxillary bones are much shortened, and their anterior portion is thicker than in the rock-pigeon, as is the lower part of the nasal bone.
The ascending branches ofpremaxillary bones and the inner nasal processes are much shortened.
Argentine Republic and North Patagonia; the latter, which differs from the other three in having no tooth implanted in the premaxillary bone and is often referred to a genus apart, as Zaedius.
In specimens of woodfordi and melanops examined by me, the premaxillary bones are in contact.
In the second paper he stated that the anterior projections of the premaxillary bones are separated distinctly in both Nesonycteris and Melonycteris.
On the side of the rostrum the premaxillary forms the anterointernal border of the infraorbital foramen.
With this modeling of the side of the rostrum because of the incisor root canal, and the flaring of the posterior and ventral edges of the infraorbital foramen, the side wall of the premaxillary appears as a depressed area.
Anterior to the incisor root the tip of the premaxillary projects forward, and parallels its opposite, laterally, instead of turning inward as in Liomys.
The premaxillary extends downward as a plate of bone, and embraces the posterior and lateral sides of the incisor as in Recent heteromyids.
The incisor arches through the premaxillary in a manner similar to that in Liomys, with the upper wall of the root canal being formed by the upper surface of the bone.
The nasal is widest anteriorly where it curves downward on the side to meet the anterior projection of the premaxillary bone beyond the incisor.
It is not possible to establish what part of the median septum between the foramina is made up of premaxillary bones.
Due to the narrowness of the rostrum, the root of the incisor is prominently outlined on the side of the rostrum, both in the premaxillary and maxillary bones.
The premaxillary bone, which constitutes most of the anterior part of the rostrum, is typically heteromyid in shape.
Ventrally thepremaxillary makes up the anterior two-thirds of the lateral wall of the incisive (anterior palatine) foramen.
At the point where it forms the anterior border of the internal naris, the premaxillary is slightly wider than the maxillary and seems to become narrower as it approaches the midline.
The premaxillaryextends posterolaterally to a distance 5.
The position, length, and shape of the premaxillary shown in palatal view (Fig.
The maxillary begins at a suture with the premaxillary lateral to the naris and continues posteriorly, bordering the orbit with a width of about 1.
The maxillary meets the premaxillary lateral to the naris, borders the naris posteroventrally, and continues posteriorly beneath the orbit, of which it forms the external border.
The ethmosphenoid, which we cannot identify, may have been exposed in a gap between the premaxillary and the palatine.
In the skull the nasal and premaxillarybones are much shortened, the maxillaries are excluded from any junction with the nasals, and all the bones are slightly modified, even to the plane of the occiput.
The ethmoid is large; the distance between the anterior end of the ethmoid and the anterior edge of the premaxillary varies between 15 and 20 per cent of the total length of the skull.
The width of the premaxillary comprises about 30 per cent of the width of the skull in S.
The combinedpremaxillary width is about one-fourth the width of the skull.
The maxillary foramen is situated a little in advance of the premaxillary foramen and is directed forward, and, as Dr.
Unlike those species, it has the premaxillary foramen behind the maxillary foramen, and in this respect resembles densirostris and grayi.
The premaxillae are noticeably constricted immediately in front of the premaxillary foramina, and the expanded portion just behind these foramina is nearly horizontal, with a low transverse ridge near the middle.
The premaxillary is single and small, and as a rule connected with the maxillary only by ligament.
In the former this bone is loosely attached to the lower aspect of the cranium; in the latter it borders the mouth, and is suturally joined to the premaxillary and the prefrontal.
Minor characters are these: the pectoral fins are inserted high on the shoulder-girdle, the scales are often ctenoid, and the edge of the upper jaw is formed by the premaxillary alone, the maxillary being always toothless.
The Pinguipedidæ of Chile resemble the Latilidæ, having also the enlarged premaxillary tooth.
The Malacanthidæ are elongate fishes, rather handsomely colored, with a strong canine on the premaxillary behind.
The premaxillary forms the entire edge of the upper jaw, the maxillary being without teeth.
The Symbranchia are distinguished by the development of the ordinary fish mouth, the maxillary and premaxillary being well developed.
In the genus Argyrosomus the mouth is larger, the premaxillary not set vertical, but extending forward on its lower edge, and the body is more elongate and more evenly elliptical.
Its upper posterior tip or premaxillary spine projects backward almost at right angles with the rest of the bone into a groove on the ethmoid.
When the spines of the premaxillary are very long the upper jaw may be thrust out for a considerable distance.
From the latter it differs in the hyostylic cranium, the lower jaw being suspended from the hyomandibular, and by the presence of distinct premaxillary and maxillary elements in the upper jaw.
The premaxillary is also often known as intermaxillary.
In the striped bass this bone is without teeth, but in many less specialized forms, as the salmon, it is provided with teeth and joined to the premaxillary in a different fashion.
In some degraded types of fishes (eels, morays, congers) the premaxillary is indistinguishable, being united with the vomer and palatines.
In the process of development we next reach the characteristic fish mouth in which the upper jaw is formed of maxillary and premaxillary elements distinct from the skull.
The skull is autostylic, the upper jaw being made as in the Chimaera of palatal elements joined to the quadrate and fused with the cranium, without premaxillary or maxillary.
The premaxillary is relatively heavy and has a concavity posteroventrally.
In an articulated skull, the anterior edge of the maxillary is immediately posterior to the lateral tip of the premaxillary (fig.
The teeth on the premaxillary and anterior part of the maxillary are long, pointed, and terminally curved backwards.
The maxillary and premaxillaryteeth are rather long, bifid, and moderately spatulate.
Some teeth on the premaxillaryand anterior part of the maxillary are hooked.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "premaxillary" in a variety of sentences. We hope that you will now be able to make sentences using this word.
