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69 results for “dentary”
Fig. 1 in A unique dentary suggests a third genus of batrachosauroidid salamander existed during the latest Cretaceous in the western USA
Fig. 1. Photographs of indeterminate batrachosauroidid (probable new genus and species) left dentary, AMNH FARB 22965, from the uppermost Cretaceous (upper Maastrichtian) Lance Formation, Bushy Tailed Blowout, Wyoming, USA. Entire specimen in dorsal (A1), lingual-dorsal (A2), lingual (A3), lingual-ventral (A4), ventral and slightly lingual (A5), ventral (A6), labial (A7), and labial and slightly ventral (A8) views. Detail of anterior end in dorsal (A9) and lingual-dorsal (A10) views. Specimen lightly dusted with ammonium chloride to enhance surface details.
Fig. 5 in A unique dentary suggests a third genus of batrachosauroidid salamander existed during the latest Cretaceous in the western USA
Fig. 5. Referred dentaries of other, paracontemporaneous (upper Maastrichtian) batrachosauroidid salamanders from the North American Western Interior. A–C. Opisthotriton kayi Auffenberg, 1961. A. Posteriorly incomplete left dentary, UW 14575, from Robber's Roost, Lance Formation, Wyoming, USA, in lingual (A1) and lingual and slightly dorsal (A2) views. B. Nearly complete left dentary, UALVP 12093, from Bushy Tailed Blowout, Lance Formation, Wyoming, USA, lingual views of complete specimen (B1) and detail of anterior end (B2), the latter with arrow denoting slightly constricted zone of weakness between pedicel and crown typical of subpedicellate teeth. C. Posteriorly incomplete right dentary, UALVP 60835, from Wounded Knee, Frenchman Formation, Saskatchewan, Canada, lingual views of complete specimen (C1) and detail of anterior end (C2). D, E. Prodesmodon copei Estes, 1964. D. Anteriorly incomplete left dentary, UALVP 12092, from Bushy Tailed Blowout, Lance Formation, Wyoming, USA, in lingual view. E. Posteriorly incomplete left dentary, UALVP 39928, from Bushy Tailed Blowout, Lance Formation, Wyoming, USA, in lingual (E1) and ventral (E2) views. The three O. kayi dentaries (A–C) each bear a shallow pit in approximately the same position as the flattened and shallowly concave knob in AMNH FARB 22965, whereas the more anteriorly complete Pro. copei dentary (E) bears a convex knob positioned more ventrolabially relative to the potentially homologous pit in O. kayi and the flattened and shallowly concave knob in AMNH FARB 22965. Also note how many of the incomplete teeth in the three O. kayi dentaries (A–C) are broken at the same level, along the plane of weakness between the crown and pedicel, whereas nonpedicellate teeth in the two Pro. copei dentaries (D, E) are broken at various positions along the basal-apical lengths of the teeth. All images are photographs, with specimens lightly dusted with ammonium chloride to enhance surface details.
Fig. 2 in A unique dentary suggests a third genus of batrachosauroidid salamander existed during the latest Cretaceous in the western USA
Fig. 2. SEM micrographs of indeterminate batrachosauroidid (probable new genus and species) left dentary, AMNH FARB 22965, from the uppermost Cretaceous (upper Maastrichtian) Lance Formation, Bushy Tailed Blowout, Wyoming, USA. Entire specimen in labial (A1), lingual and slightly dorsal A2), lingual (A3), and dorsal and slightly lingual (A4) views. Detail of anterior end in lingual (A5) and lingual-dorsal (A6) views.
Fig. 3 in A unique dentary suggests a third genus of batrachosauroidid salamander existed during the latest Cretaceous in the western USA
Fig. 3. Drawings of indeterminate batrachosauroidid (probable new genus and species) left dentary, AMNH FARB 22965, from the uppermost Cretaceous (upper Maastrichtian) Lance Formation, Bushy Tailed Blowout, Wyoming, USA. Entire specimen in labial (A1), lingual (A2), and dorsal (A3) views. Tooth positions are numbered anterior-to-posterior with Arabic numbers.
Fig. 4 in A unique dentary suggests a third genus of batrachosauroidid salamander existed during the latest Cretaceous in the western USA
Fig. 4. Examples of pathological salamander mandibles. A.?Opisthotriton kayi Auffenberg, 1961, anterior portion of left dentary, OMNH 67080, from the Upper Cretaceous (upper Campanian) Kaiparowits Formation, OMNH locality V9, Utah, USA, in dorsal (A1), lingual and slightly dorsal (A2), labial A3), ventral (A4), and anterior-labial and slightly ventral (A5) views. Note symphysial end distorted by a bony swelling or callus (indicated by single asterisk), presumably formed by healing after an unknown injury. B. Ambystoma mexicanum (Shaw and Nodder, 1798), entire tooth-bearing ramus of left and right dentaries and anterior portion of areas for attachment of post-dentary bones, both from TMP 2010.30.09, an extant and captive bred individual: normal left dentary in lingual view (B1), pathological right dentary + coronoid in lingual (B2), lingual-dorsal (B3), and dorsal (B4) views. Note continuous dentary tooth row in normal left dentary (B1) vs. anterior end of coronoid overlaps and causes gap (indicated by double asterisks) in dentary tooth row in pathological right mandible (B2–B4). Images SEM micrographs (A) and photographs of specimens lightly dusted with ammonium chloride to enhance surface details (B).
Fig. 24. Tyrannosaurus rex. Cross section through the dentary showing a in Crania of Tyrannosaurus and Allosaurus
Fig. 24. Tyrannosaurus rex. Cross section through the dentary showing a small successional tooth on the inner side of a functional tooth. Amer. Mus. No. 973. Scale 1/2.
Text-fig. 5.—Teeth of the Jordan theropod (LACM 28471). A, Premaxillary tooth in lateral and posterior aspects and section. B, First left dentary tooth in lateral and posterior aspects. C, Second left maxillary tooth in lateral aspect. in A new Theropod Dinosaur from the Upper Cretaceous of Central Montana
Text-fig. 5.—Teeth of the Jordan theropod (LACM 28471). A, Premaxillary tooth in lateral and posterior aspects and section. B, First left dentary tooth in lateral and posterior aspects. C, Second left maxillary tooth in lateral aspect.
Text-fig. 7.—A, Ratio (H/L) of height of maxilla (at anterior margin of antorbital recess) to length of maxilla (to anterior margin of antorbital recess), plotted against length (L) of maxilla (to anterior margin of antorbital recess). Length scale in cm. B, Ratio (D/L) of depth of dentary ramus to length of maxilla (to anterior margin of antorbital recess), plotted against length of maxilla (to anterior margin of antorbital recess). Length scale in cm. in A new Theropod Dinosaur from the Upper Cretaceous of Central Montana
Text-fig. 7.—A, Ratio (H/L) of height of maxilla (at anterior margin of antorbital recess) to length of maxilla (to anterior margin of antorbital recess), plotted against length (L) of maxilla (to anterior margin of antorbital recess). Length scale in cm. B, Ratio (D/L) of depth of dentary ramus to length of maxilla (to anterior margin of antorbital recess), plotted against length of maxilla (to anterior margin of antorbital recess). Length scale in cm.
EXPLANATION OF PLATE I Left lateral aspect of skull of Stephanosaurus marginatus; one- fifth the natural size. Abbreviations.-D, lateral temporal fossa; DN, dentary; J, jugal; L, lachrymal; MX, maxilla; N, nasal; NO, nasal opening; OR, orbit; PD, predentary; PF, prefrontal; PM, premaxilla; Q, quadrate; QJ, quadrato-jugal; S, squamosal; SA, surangular. in On a new genus and species of carnivorous dinosaur from the Belly River Formation of Alberta, with a description of the skull of Stephanosaurus marginatus from the same horizon
EXPLANATION OF PLATE I Left lateral aspect of skull of Stephanosaurus marginatus; one- fifth the natural size. Abbreviations.-D, lateral temporal fossa; DN, dentary; J, jugal; L, lachrymal; MX, maxilla; N, nasal; NO, nasal opening; OR, orbit; PD, predentary; PF, prefrontal; PM, premaxilla; Q, quadrate; QJ, quadrato-jugal; S, squamosal; SA, surangular.
FIGURE 4 —lsolated lower teeth associated with left dentary NMMNH P-lol 3 - I in Tyrannosaurus rex from the McRae Formation (Lancian, Upper Cretaceous), Elephant Butte Resevoir, Sierra County, New Mexico
FIGURE 4 —lsolated lower teeth associated with left dentary NMMNH P-lol 3 - I; top, buceal sides; bottom. lingual sides. Bar scale= 5 cm
FIGURE 7—Isolated tooth associated with left dentary NMMNH P in Tyrannosaurus rex from the McRae Formation (Lancian, Upper Cretaceous), Elephant Butte Resevoir, Sierra County, New Mexico
FIGURE 7—Isolated tooth associated with left dentary NMMNH P ~lOl3~l, from either right dentary or left maxilla
FIGURE 4—lsolated lower teeth associated with left dentary NMMNH P-lol 3 - I in Tyrannosaurus rex from the McRae Formation (Lancian, Upper Cretaceous), Elephant Butte Resevoir, Sierra County, New Mexico
FIGURE 4—lsolated lower teeth associated with left dentary NMMNH P-lol 3 - I; top, buceal sides; bottom. lingual sides. Bar scale= 5 cm
FIGURE 7—Isolated tooth associated with left dentary NMMNH P in Tyrannosaurus rex from the McRae Formation (Lancian, Upper Cretaceous), Elephant Butte Resevoir, Sierra County, New Mexico
FIGURE 7—Isolated tooth associated with left dentary NMMNH P~lOl3~l, from either right dentary or left maxilla
FIGURE 4—lsolated lower teeth associated with left dentary NMMNH P-lol 3 - I in Tyrannosaurus rex from the McRae Formation (Lancian, Upper Cretaceous), Elephant Butte Resevoir, Sierra County, New Mexico
FIGURE 4—lsolated lower teeth associated with left dentary NMMNH P-lol 3 - I; top, buceal sides; bottom. lingual sides. Bar scale= 5 cm
Text-fig. 2. A – Elasmobranchii gen. et spec. indet. specimen NM Pc 02876b; B – Scopeloides glarisianus dentary NM Pc 02888 (the white arrows mark the tips of the "fang-like" teeth); C – S. glarisianus disarticulated skeleton NM Pc 02887a; D – Sardinella sardinites scale NM Pc 02886; E – Clupeidae gen. et spec. indet. articulated skeleton without head NM Pc 02889; F – Anenchelum glarisianum body fragment NM Pc 02880a; G – Percoidei gen. et sp. indet. preoperculum (G-1) and its interpretation (G-2) NM Pc 02891. The arrow shows the enlarged spine in the angle between rami verticalis and horizontalis. Abbreviations: cl – cleithrum; op – operculum; pcl – postcleithrum. in An Annotated List Of The Oligocene Fish Fauna From The Osíčko Locality (Menilitic Fm.; Moravia, The Czech Republic)
Text-fig. 2. A – Elasmobranchii gen. et spec. indet. specimen NM Pc 02876b; B – Scopeloides glarisianus dentary NM Pc 02888 (the white arrows mark the tips of the "fang-like" teeth); C – S. glarisianus disarticulated skeleton NM Pc 02887a; D – Sardinella sardinites scale NM Pc 02886; E – Clupeidae gen. et spec. indet. articulated skeleton without head NM Pc 02889; F – Anenchelum glarisianum body fragment NM Pc 02880a; G – Percoidei gen. et sp. indet. preoperculum (G-1) and its interpretation (G-2) NM Pc 02891. The arrow shows the enlarged spine in the angle between rami verticalis and horizontalis. Abbreviations: cl – cleithrum; op – operculum; pcl – postcleithrum.
Text-fig. 4. Cyclurus macrocephalus REUSS. Isolated skull bones. Specimen NMP Pc 2848. Dent: dentary; Dpal: dermopalatine; Mx: maxillary; Vo: vomer. [Photograph D. Serrette] in Complements To The Anatomical Knowledge Of Reuss (Pisces, Actinopterygii) From The Eocene Of Kučlín, Bohemia, Czech Republic
Text-fig. 4. Cyclurus macrocephalus REUSS. Isolated skull bones. Specimen NMP Pc 2848. Dent: dentary; Dpal: dermopalatine; Mx: maxillary; Vo: vomer. [Photograph D. Serrette]
Text-fig. 7. Cyclurus macrocephalus REUSS. Specimen NMP Pc 313. Right dentary. [Photograph D. Serrette] in Complements To The Anatomical Knowledge Of Reuss (Pisces, Actinopterygii) From The Eocene Of Kučlín, Bohemia, Czech Republic
Text-fig. 7. Cyclurus macrocephalus REUSS. Specimen NMP Pc 313. Right dentary. [Photograph D. Serrette]
Text-fig. 2. Cyclurus macrocephalus REUSS. Specimen NMP Pc 2847. A: Ventral view of neurocranium. Bocc: basioccipital; Pmx: premaxillary; Psph: parasphenoid; cor. teeth: coronoid teeth. B.: Lower jaw and gular. Ang: angular; Dent: dentary; Gul: gular; Mx: maxillary; Sang: supraangular; cor. teeth: coronoid teeth. [Photographs D. Serrette] in Complements To The Anatomical Knowledge Of Reuss (Pisces, Actinopterygii) From The Eocene Of Kučlín, Bohemia, Czech Republic
Text-fig. 2. Cyclurus macrocephalus REUSS. Specimen NMP Pc 2847. A: Ventral view of neurocranium. Bocc: basioccipital; Pmx: premaxillary; Psph: parasphenoid; cor. teeth: coronoid teeth. B.: Lower jaw and gular. Ang: angular; Dent: dentary; Gul: gular; Mx: maxillary; Sang: supraangular; cor. teeth: coronoid teeth. [Photographs D. Serrette]
Fig. 4. Right dentary and m1–m3 in Late Miocene potamarchine rodents from southwestern Amazonia, Brazil-with description of new taxa
Fig. 4. Right dentary and m1–m3 series of potamarchine rodent Potamarchus murinus Burmeister, 1885 (UFAC 1820) from Solimões Formation, Late Miocene, Brazil; in lateral view (A), showing detail of the labial view of the cheek teeth (A2); occlusal view (B), showing detail of the occlusal view of the cheek teeth (B2); and medial view (C).
Fig. 3 in New partial dentaries of amphitheriid mammal Palaeoxonodon ooliticus from Scotland, and posterior dentary morphology in early cladotherians
Fig. 3. Parsimony analysis and reconstructions of dentary of Palaeoxonodon ooliticus (B, C), with Amphitherium (D) for comparison. A. Equally weighted parsimony analysis with additional mandibular characters for the early cladotherian Palaeoxonodon ooliticus, and rescored and updated matrix from Close et al. 2016 (adapted from Zhou et al. 2013). Jackknife resampling statistics and Bremer values (bold) are shown adjacent to individual nodes. B. Composite of NMS G. 2015.17.1 (grey) and coronoid of NMS G.2017.37.1 (red) in buccal (B1) and lingual (B2) views (arrows indicate anterior direction). Data for NMS G. 2015.17.1 from Close et al. (2016). C. Reconstruction of jaw in buccal (C1) and lingual (C2) views. D. Reconstruction based on composite created by EP from NHMUK PV M.36822 and OUMNH J.20075 in buccal view. Scale bars 1 mm.
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Allen Brain Atlas
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