| Descriptions | Term |
|---|
| A transverse bony ridge across the cranium near the posterior border of the parietals | |
| Overlapping as the shingles of a roof | |
| A passage through which the tear duct drains into the nasal cavity, usually near the anterior margin of the orbit | |
| Paired bones roofing the posterior part of the braincase | |
| Bone, if present, located just beneath the auditory bulla | |
| A perforation through a bone for the passage of a nerve or blood vessel | |
| Nipping or chiselling teeth at the front of the jaws | |
| The opening of the skull through which the spinal cord emerges | |
| The bone that forms the midsection of the zygomatic arch | |
| Condition found in the Didelphimorphia and Peramelina in which the lower jaw is not shortened and the anterior lower incisors are not greatly elongated | |
| A socket in which the root of a tooth is set | |
| The anterior-most pair of bones covering the brain, situated between the orbits. Actually paired, but often fusing together at an early age | |
| Having a fringed or fringe-like border | |
| Skin membvrane extending between the hindlegs and frequently enclosing the tail - especially in bats | |
| The projection from the lower medial margin of the pinna in most microchiropteran bats | |
| The large space between the orbit enclosed by the zygomatic arch and the postorbital processes | |
| Having perforations or openings | |
| A pit, depession, trough, or extensive opening | |
| Paired bones, sometimes fused to the basisphenoid and alisphenoids, that form the walls of the posterior part of the interpterygoid fossa | |
| Small head or bony prominence on a bone | |
| The bone surrounding the foramen magnum and bearing the occipital condyles. Formed from 4 embryonic elements, the basioccipital below, 2 exoccipitals, and the supraoccipital above | |
| In bats, thin web of skin that extends from the shoulder to the wrist anterior to the upper arm and forearm | |
| A small bone in the anterior face of the orbit | |
| A vacant space, or gap, between teeth | |
| Ivory-like substance beneath the enamel, usually constituting he bulk of a tooth | |
| The lower jaw, composed of the two dentaries in mammals | |
| The portion of the skull anterior to the orbits | |
| Paired bones in the front of the upper jaw that bear the incisor teeth | |
| The first digit of the pes (foot), the big toe; frequently opposable in arboreal mammals | |
| | Descriptions | Term |
|---|
| Teeth with high crowns; usually rootless and ever-growing | |
| The bony external or anterior aperture of the nasal cavity | |
| A fan-shaped bone on either side of the braincase above the auditory bulla | |
| External ear | |
| A pair of openings piercing the palate behind the incisor teeth | |
| A bone in the penis of certain mammals | |
| A bony or cartilaginous spur arising from the ankle, and in bats, helping to support the uropatagium | |
| The arch of bone that forms the lateral border of the orbit and temporal fossa | |
| One of the two branches of the mandible | |
| With a pattern consisting of sharply angled triangles, or loops with sharp salient angles | |
| Having teeth differentiated into various types, i.e. incisors, canines, premolars, and molars | |
| A winglike bone forming part of the lateral wall of the braincase. It also forms part of the posterior wall of the orbit. Frequently fused to the basisphenoid | |
| Teeth whose crowns have a series of lophs | |
| A longitudinal median bony ridge dorsal to the braincase. Often formed by a coalescence of temporal ridges | |
| A bony bar between the orbit and the temporal fossa, formed by the union of the two postorbital processes | |
| On the side next to the lips | |
| A transverse ridge of enamel across a tooth | |
| Deciduous teeth, posterior to the canines | |
| Extremely hard outer layer on the crown of a tooth. consiting of calcareous compounds | |
| Pertaining to two or more digits that are fused together | |
| On the side next to the cheek | |
| A knob on either side of the foramen magnum that articulates with the first vertebra | |
| The lower jaw bone, constituting one half of the lower jaw or mandible | |
| In bats, membrane that fills space between the digits of the forelimb: d. minus (between digits II and III), d. longus (between digits III and IV), d. latus (between digits IV and | |
| The bone in the upper jaw that bears the canine, premolar, and molar teeth | |
| A hooklike spine on the posyterior cormer of the pterygoid bone | |
| The layer of bonelike material covering the root of a tooth | |
| The inflated bony capsule that encases the middle and inner ear | |
| The posterior teeth in the upper and lower jaws that are nondeciduous | |
| | Descriptions | Term |
|---|
| A projection from either the jugal bone on the zygomatic arch, or the frontal bone, partially separating the orbit and the temporal fossa | |
| Bone surrounding the middle ear cavity | |
| A median ventral bone lying anterior to the occipital and between the auditory bullae | |
| An unpaired median bone in the floor of the interpterygoid fossa, with two lateral wings, sometimes called orbitosphenoids, that form part of each orbit | |
| cheek teeth with a cutting or shearing action adapted for a carnivorous diet | |
| The suture between the paired dentaries | |
| The posterior ventral projection of the dentary below the condyle | |
| The bony roof of the mouth composed of parts of the premaxillary, maxillary and palatine bones | |
| An enlarged tooth between the incisors and premolars; usually a large stabbing tooth, occasionally bladelike, but sometimes small and similar to the teeth preceding it | |
| An unpaired bone at the rear of the cranium located between the parietals and above and anterior to the occipital | |
| Chamber into which digestive, reproductive and urinary systems empty, and then exit the body | |
| A ridge traversing the top or side of the braincase, marking the dorsal border of the insertion of the temporal muscle. They may be found on parts of the frontal and parietal bones | |
| Paired bones that form the posterior part of the hard palate, and wall the anterior part of the interpterygoid fossa | |
| A thin, median, vertical partition of bone that divides the nasal cavity into right and left halves | |
| Lacking teeth | |
| Having teeth that are all essentially similar, usually simple cones | |
| Low crownded squarish teeth, capped with enamel, and possessing four major cusps arranged in a rectangle (as in pigs and humans) | |
| A passage from the anterior face of the orbit to the side of the rostrum, passing through the base of the maxillary process | |
| The internal or posterior bony opening(s) of the nasal cavity | |
| Condition that exist in the Paucituberculata and Diprotodonta. The lower jaw is shortened and the first lower incisors are greatly elongated to meet the upper incisors | |
| Teeth with longitudinal crescentic ridges of enamel | |
| The trough in the squamosal bone for the reception of the mandibular condyle of the dentary | |
| On the side next to the tongue | |
| Having two sets of teeth: a milk or deciduous set and then a permanent set | |
| The bony socket that contains the eyeball | |
| Low-crowned; any tooth whose width exceeds the height of the crown above the alveolus | |
| The most dorsal part of the mandible, the part of the vertical ramus dorsal and anterior to the condyle | |
| The part at the rear of the mandible that articulates with the upper jaw | |
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