vomer

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vomer

[′vō·mər]
(anatomy)
A skull bone below the ethmoid region constituting part of the nasal septum in most vertebrates.
References in periodicals archive ?
In 2012 we captured two larvae with hypertrophied vomerine teeth in Unnamed Lake 21 (hereafter Lake 21, 46.
Diagnosis: A species of melanotaeniid rainbow-fish distinguished by the following combination of characters: dorsal rays IV-VI + 1,14-17; anal rays 1,24-26 (usually 24); pectoral rays 14 or 15 (usually 14); lateral scales 36-37 (usually 37), transverse scales 9 or 10; predorsal scales 16-18 (usually 17); circumpeduncular scales 13; total gill rakers on first arch 16 or 17 (usually 16); total scales covering preopercul um 13-19 (adults with 16-19) ; adult with two separate patches of vomerine teeth; origin of first dorsal fin about level with anal-fin origin; greatest body depth of adult male 2.
Blue spots distinct over entire body; pectoral-fin rays 17 or 18; no vomerine teeth; 34 or 35 gill rakers on first gill arch; 50-54 pores in the lateral line series, uniserially arranged; vomerine teeth absent (Gulf of California) O.
The diagnosis of cannibal morphs - 1 collected in August and 3 of the largest paedotypic animals collected in September - was determined by qualitative head morphology and degree of vomerine, maxillary, premaxillary and dentary tooth hypertrophy.
Cannibals have a broad head and enlarged vomerine teeth (Collins et al.
SMU 72863 is a vomerine toothplate, two millimeters long, with three rows of regularly arranged teeth (Fig.
It is distinguished from congeners, and especially from M misoolensis, by a combination of features that include a distinctive colour pattern with yellow dorsal, anal, and pelvic fins, usually 18-19 rakers on the first gill arch, 11-16 cheek scales, 12-13 circum-peduncular scales, first dorsal fin situated well behind anal fin origin, presence of both vomerine and palatine teeth, conspicuously rounded anal fin with relatively elongate rays on the anterior half, and relatively slender body in both sexes (greatest depth usually less than 35% SL).
9) % in females, separated from eye by 1 1/2 tympanum diameters; supratympanic fold thick, bearing 1-2 subclinical tubercles; 1-2 subconical postrictal tubercles; ventrolateral edge of lower lip bearing small tubercles, most evident posteriorly; choanae round, not concealed by palatal shelf of maxillary arch; vomerine odontophores median and posterior to choanae, separated medially by distance equal 1/2 width of an odontophore, each larger than a choanae, oval in males, subtriangular in outline in females, bearing up to 6 teeth in a slanted row; tongue oval, posterior 1/3 not adherent to floor of mouth, posterior edge not notched; long vocal slits lateral to tongue, vocal sac subgular.
Diagnosis: (1) skin of dorsum shagreen with flat warts, that of venter areolate; short dorsolateral folds present; (2) tympanum round, its length 45-54 % that of eye; (3) snout short, subacuminate in dorsal view, rounded in profile; canthus rostralis sharp; (4) upper eyelid narrower than interorbital distance, no cranial crests; (5) vomerine odontophores oval; (6) vocal sac and nuptial pad present in males; (7) first finger shorter than second; fingers lack disks but with ventral pads; (8) fingers bear lateral keels; (9) ulnar tubercles present, fusing to form ridge; (10) round tubercle on heel; outer tarsal fold present; short inner tarsal fold; (11) inner metatarsal tubercle oval, 1.
Additional diagnostic features include 18-20 gill rakers on the first branchial arch, 15-16 circumpeduncular scales, and an absence of vomerine teeth or a small, inconspicuous patch of rudimentary vomerine teeth.
0 % eye length; 2 or 3 conical postrictal tubercles; choanae not concealed by palatal shelf of maxillary arch, triangular in outline; vomerine odontophores median and posterior to choanae, subtriangular in outline in female, slanted in males, separated medially by distance equal width of an odontophore, bearing a slanted row of 3-5 teeth; posterior edge of tongue notched, posterior 1/5 not adherent to floor of mouth; no vocal slits in males.