The pterygoids are cut off from the maxillae anteriorly by a very narrow band of the palatine, which connects with a broad band externally and a lanceolate segment internally.
The inferior surface of the pterygoids is convex on the side adjoining the lateral free margin (Pl.
A narrow strip of the palatines extends around the base of the pterygoids in front, but the two strips do not meet in the median line.
The inferior borders of the pterygoids are convex anteriorly, as in europaeus, and are continued laterally, so that the sinus is deep as in that species.
The palatines extend as a broad band much beyond the pterygoids anteriorly.
Inferior surface of pterygoids more or less convex, with a ridge (in adults) running diagonally across it.
In the skull the pterygoids are thick and meet in the middle line; the symphysis of the mandible is long.
The pterygoids meet in the middle line as in the Cachalot.
Nearly the only mammals which resemble the Whales in the fact that the pterygoids sometimes meet in the middle line below are the Edentata (Anteater and Armadillo, see p.
Considering the many adaptive resemblances between this genus and the American Anteaters, especially in the mouth cavity, it is remarkable that in Manis the pterygoids are not joined as they are in Myrmecophaga.
The pterygoids are as in Delphinapterus, and, as in that genus, there are no hairs upon the face or dorsal fin.
The pterygoids are not in contact in the middle line.
In Tatusia (but not in Dasypus) the "short thickpterygoids add somewhat to the hard palate.
Skull raised into a prominence behind the blow-hole; pterygoids large and in contact.
As in Myrmecophaga, the pterygoids enter into the formation of the bony palate.
The pterygoids are wide apart, though they converge as if about to meet at their posterior ends.
The pterygoids meet below for a considerable distance, as in many Dolphins, and in the Edentata among other mammals.
It is to be distinguished, anatomically, from its larger relatives by the complete clavicle, and by the fact that the pterygoids do not meet in the middle line of the skull.
There are sixteen ribs; there is no zygomatic arch, and the pterygoidsconverge posteriorly.
It has no dorsal fin, the teeth are small and numerous (forty-four), and the pterygoids are separate.
It differs from that of the other members of the family mainly in the long canal for the posterior nostrils not being closed by bone below, as the greater part of the palatines and the pterygoids do not meet in the middle line.
The pterygoids extend backwards as far as the tympanics, but do not meet in the middle line below.
I have not seen an ascending process of the pterygoids on skulls of American softshells as described by Loveridge and Williams (op.
Of these bones the vomer is never related to a cartilaginous tract below, while the palatines and pterygoids usually are so.
They are attached only to the maxillae, premaxillae and mandible, never to the palatines, pterygoids or other bones.
In all other Carinatae the vomers are narrow behind, and the palatines and pterygoids converge posteriorly and articulate largely with the rostrum.
In the Ratitae and the Tinamous (Tinamidae), among Carinatae the vomers unite and form a large broad bone, separating the palatines and the pterygoids from the rostrum.
The premaxillae are very small and the pterygoids are slender.
In the Jurassic crocodile, Teleosaurus, the posterior nares lie further back, being surrounded by the palatines, but the pterygoids do not meet them.
In living genera there is a long secondary palate formed by the meeting in the middle line of the palatines, pterygoids and maxillae (fig.
The palatines and pterygoids are moderately large, and the pterygoidshave a backwardly-projecting hamular process.
Teeth are always present, and may be confined to the jaws or may be developed also on the pterygoids and rarely on the palatines; they are either acrodont or pleurodont.
A, 3) are long and rather narrow bones interposed between the maxillae in front and pterygoids behind.
In all except the Tinamidae the vomers are narrow behind and not interposed between the palatines, pterygoids and basisphenoidal rostrum.
The palatines frequently bear teeth, and in Proterosaurus teeth occur also on the pterygoids and vomers.
The palate is long and narrow, but the pterygoidsdo not take part in its formation.
In living Crocodilia, however, outgrowths are formed from the pterygoids and palatines which arch round and meet one another ventrally, forming a secondary palate (fig.
Quadrate suspended from the supratemporal; mandible at least as long as the skull; pterygoids extending to quadrate or mandible.
The pterygoidsdo not appear until metamorphosis, when ossification is evident in only the mid-parts of the posterolateral arms.
The palatines do not appear until all three arms of the pterygoids are at least partly ossified.
The auditory regions are relatively massive and bear narrow tegmen tympani; the distal ends of the tegmen tympani are medial to the lateral edge of the pterygoidsin dorsal view.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pterygoids" in a variety of sentences. We hope that you will now be able to make sentences using this word.
