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369 results for “Cranial morphology”
FIGURE 4 in Morphological distinction of species of Thrichomys (Rodentia: Echimyidae) through ontogeny of cranial and dental characters
FIGURE 4. The shapes of interpremaxilar foramina (above) and incisive foramina of: (A) Thrichomys laurentius, (B) T. pachyurus and (C) T. inermis. Scale bar is 5 mm.
FIGURE 3 in Cranial morphology and karyotypic analysis of Ceratophrys joazeirensis (Anura: Ceratophryidae, Ceratophrynae): taxonomic considerations
FIGURE 3. Skull of Ceratophrys aurita (UFPB 4308). A: dorsal view; B; palatal view and C: lateral view. 1—Except for the premaxillae, the clear areas in A and C, inferior portions of the maxillae and quadratojugal concern to dorsal bone shields; 2—nonrounded caudal projection of the squamosal (lamella alaris); 3—concave extremity of the processus posterior in frontoparietals; 4—narrow torus terminalis; 5 and 6—depressions in the orbital arch of the squamosal; 7—preorbital depression; 8—palatine teeth; 9—pterygoid; 10—quadratojugal; 11—parasphenoid; 12— absent depression between the vomers; 13—long caudal projection of the squamosal, slightly shorter than quadratojugal in length. Author Kleber da S. Vieira.
FIGURE 2 in Cranial morphology and karyotypic analysis of Ceratophrys joazeirensis (Anura: Ceratophryidae, Ceratophrynae): taxonomic considerations
FIGURE 2. Skull of Ceratophrys joazeirensis (UFPB 4303) collected at Parque Estadual Pedra da Boca. A: dorsal view; B: palatal view; C: lateral view and D: pectoral girdle. 1—pars facialis; 2— absence of preorbital depression; 3—absence of depression in orbital arch of squamosal; 4— rounded extremity of the caudal portion (lamella alaris) of the squamosal; 5—prooticum; 6— convex dorsal posterior portion of the frontoparietals; 7—rounded extremity of the processus posterior in frontoparietals; 8—large and elliptical torus terminalis of the prooticexoccipitals in dorsal view; 9—delimited pterygoids in the ramus maxillaries and ramus interior; 10—palatine teeth; 11—depression dividing the vomers in the margo medialis; 12—parasphenoid; 13—prémaxillae; 14—maxillae; 15—quadratojugal; 16—pterygoid; 17—short caudal projection of the squamosal, shorter than quadratojugal in length; 18—clavicle; 19—epicoracoid; 20—coracoid; 21—sternum. Except for the premaxillae, the clear areas in A and C, inferior portions of the maxillae and quadratojugal concern to dorsal bone shields. Author Kleber da S. Vieira.
FIGURE 1 in Cranial morphology and karyotypic analysis of Ceratophrys joazeirensis (Anura: Ceratophryidae, Ceratophrynae): taxonomic considerations
FIGURE 1. The triangle marks the occurrence area of Ceratophrys joazeirensis, situated at Parque Estadual Pedra da Boca, in Araruna town, State of Paraíba, Brazil.
FIGURE 4 in Cranial morphology and karyotypic analysis of Ceratophrys joazeirensis (Anura: Ceratophryidae, Ceratophrynae): taxonomic considerations
FIGURE 4. Octaploid karyotype of Ceratophrys joazeirensis from Parque Estadual Pedra da Boca (2n=8x=104) arranged in 13 octets: 1 to 4 –metacentric chromosomes; 2 and 3—submetacentrics; 5 and 6—chromosomes of medium size, submetacentrics and metacentrics; the octets 7 to 13 are constituted by small metacentric and submetacentric chromosomes.
Cranial functional specialisation for strength precedes morphological evolution in Oviraptorosauria
<p>This dataset contains 3D models (.stl), Hypermesh (.hm), and Abaqus (.odb and .rpt) files for finite element analysis on the crania of oviraptorosaurian theropod species <em>Incisivosaurus gautheri</em>, <em>Citipati osmolskae</em>, <em>Khaan mckennai</em>, and <em>Conchoraptor gracilis</em> supporting the paper ‘Cranial functional specialisation for strength precedes morphological evolution in Oviraptorosauria' published in <em>Communications Biology</em> [https://doi.org/10.1038/s42003-024-06137-1].</p> <p>[Unzipped total size 47.2GB]</p>
FIGURE 5 in An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology
FIGURE 5. CT-scan images of the skull of a specimen identified as Gastrotheca splendens (CBG 1034) in dorsal (A), ventral (B), lateral (C), and frontal view (D) with the principal bones indicated. Abbreviations: alary p = alary process; angspl = angulosplenial; cr par = crista parotica; exoc = exoccipital; fpar = frontoparietal; max = maxilla; mmk = mentomeckelian bone; neopal = neopalatine; premax = premaxilla; pro = prootic; prsph = parasphenoid; pter = pterygoid; quad = quadratojugal; septo = septomaxilla; spheth = sphenethmoid; squa = squamosal. Images not at the same scale.
FIGURE 7 in An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology
FIGURE 7. Female alive specimen belonging to the Gastrotheca populations from the cloud forests (Yungas) of department La Paz (Bolivia) for which the name G. coerulemaculatus (Werner, 1899) is available. A) Dorsolateral view; B) ventral view; note the blue, green, and yellow ventral pattern, and the orange lower surface of thighs (Photos: Mauricio Pacheco).
FIGURE 3 in An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology
FIGURE 3. Cranial co-ossification with different degrees of development (increasing from A to D) in preserved individuals preliminary identified as Gastrotheca splendens: (A) female, CBG 1035; (B) female, CBG 1034; (C) female, CBG 1033; (D) female, CBG 1032.
FIGURE 1 in An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology
FIGURE 1. Three nominal species of Gastrotheca from the Yungas of central Bolivia: (A) G. lauzuricae: female holotype, EBD 37379H, 34.3 mm SVL, from La Siberia, 2800 m, province Carrasco, Cochabamba, Bolivia; (B) G. piperata: female EBD 37243H, 41.9 mm SVL, from Yunga de Mairana, 2300 m, province Florida, Santa Cruz, Bolivia; (C) G. splendens: female MNK 1988, 44.7 mm SVL, from Abra de la Cruz, province Caballero, Santa Cruz, Bolivia. Photos by I. De la Riva. Note the variation on the dorsal coloration pattern (A, B) and the cranial co-ossification externally visible (C).
FIGURE 2 in An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology
FIGURE 2. Localities of Gastrotheca from the cloud forests (Yungas) of Bolivia. Red dot: type locality of G. lauzuricae; yellow dot: type locality of G. piperata; purple dot: only known locality for G. splendens; white star: type locality of G. coerulemaculatus; black star: type locality of Nototrema bolivianum; white dots: rest of specimens examined. See Appendix I for detailed locality data. Localities lying very close are represented by a single symbol.
FIGURE 4 in An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology
FIGURE 4. Morphometric multivariate analyses of Gastrotheca spp. from the Yungas of central Bolivia based on nine morphometric variables (N = 55). (A) Principal components analysis (PCA) using unmodified variables; (B) PCA based on the residuals obtained by simple linear regressions between size and the remaining eight variables to account for the size component issue (sexes shown separately); (C) Linear discriminant analysis. Percent values indicate the proportion of variation explained by each principal component and discriminant function. Centroids of each of the species under consideration in the PCAs are indicated by the respective symbol with a white margin. A priori identifications are based on published descriptions of the species and putative differences.
FIGURE 6 in An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology
FIGURE 6. CT-scan images of the skulls of three putative species of Gastrotheca from the Yungas of central Bolivia: (A, D, G, J) Gastrotheca lauzuricae, EBD 37379H, female holotype, 34.3 mm SVL; (B, E, H, K) G. piperata, MNKA 7157, female, 39.5 mm SVL; (C, F, I, L) G. splendens, CBG 1034, female, 41.8 mm SVL. From top to bottom: dorsal, ventral, lateral and frontal views; note the variation in the extent of hyperossification (in form of exostosis).
Figure 9 in Endangered beauties: micro-CT cranial osteology, molecular genetics and external morphology reveal three new species of chameleons in the Calumma boettgeri complex (Squamata: Chamaeleonidae)
Figure 9. Identification key to the species of the Calumma boettgeri complex, including the three new species described here. Diagnostic characters are marked in red. For a comparison of diagnostic characters, see also Table 5.
Figure 10 in Endangered beauties: micro-CT cranial osteology, molecular genetics and external morphology reveal three new species of chameleons in the Calumma boettgeri complex (Squamata: Chamaeleonidae)
Figure 10. DiceCT scan integrated into micro-CT scan of the skull of Calumma gehringi (ZSM 2840/2010), showing the position of the brain below the frontoparietal fenestra. A, lateral view on midsagittal section of three-dimensional model. B, dorsal view on three-dimensional model. C, lateral view on midsagittal section (diceCT only). D, correlation of elevation and presence/width of the frontoparietal fenestra in the Calumma nasutum group, based on data in Table 4. Scale bars: 2.0 mm.
Figure 8 in Endangered beauties: micro-CT cranial osteology, molecular genetics and external morphology reveal three new species of chameleons in the Calumma boettgeri complex (Squamata: Chamaeleonidae)
Figure 8. Distribution and habitat of Calumma juliae sp. nov. A, fragment of degraded primary forest of 15 ha next to Route Nationale 2; blue dots indicate records of C. juliae sp. nov. B, small fragment of primary forest (on the right) between rice fields and eucalyptus forest (on the left, behind). C, habitat of C. juliae sp. nov. next to rice fields; view from Route Nationale 2 in August 2016. D, C. juliae sp. nov. in sleeping position photographed at night. Satellite imagery from Google Earth (17 December 2016).
Figure 7 in Endangered beauties: micro-CT cranial osteology, molecular genetics and external morphology reveal three new species of chameleons in the Calumma boettgeri complex (Squamata: Chamaeleonidae)
Figure 7. Calumma juliae sp. nov. coloration in life during day. A, female holotype ZSM 143/2016 relaxed. B, juvenile ZSM 254/2016 relaxed. C, D, portrait of female ZSM 254/2016 with stress pattern (C) and slightly displaying (D).
Figure 4 in Endangered beauties: micro-CT cranial osteology, molecular genetics and external morphology reveal three new species of chameleons in the Calumma boettgeri complex (Squamata: Chamaeleonidae)
Figure 4. Micro-computed tomography scans of the skulls of the three holotypes in dorsal and lateral view. A, male Calumma uetzi sp. nov. (ZSM 1688/2012). B, male C. lefona sp. nov. (ZSM 2849/2010). C, female C. juliae sp. nov. (ZSM 143/2016). D, male C. boettgeri (ZSM 440/2000). E, male C. linotum holotype. F, female C. linotum (ZSM 551/2001). G, male C. gehringi holotype (ZSM 2851/2010). H, male C. guibei (ZSM 2855/2010). Diagnostic characters are encircled in red. Abbreviations are given in the Material and Methods. Scale bars: 2.0 mm.
Figure 6 in Endangered beauties: micro-CT cranial osteology, molecular genetics and external morphology reveal three new species of chameleons in the Calumma boettgeri complex (Squamata: Chamaeleonidae)
Figure 6. Distribution map of seven species of the Calumma boettgeri complex in Madagascar. The type locality is unknown for Calumma linotum. Contour lines indicate steps of 200 m elevation. The record from Nosy Komba is based on Hyde Roberts & Daly (2014). Coordinates for Calumma boettgeri, Maromiandra (Nagy et al., 2012) in Prötzel et al. (2015) are corrected to 13.9965°S, 48.2177°E.
Figure 5 in Endangered beauties: micro-CT cranial osteology, molecular genetics and external morphology reveal three new species of chameleons in the Calumma boettgeri complex (Squamata: Chamaeleonidae)
Figure 5. DiceCT scans of hemipenes. A, right hemipenes of Calumma uetzi sp. nov. in asulcal (left) and sulcal (right) view. B, left hemipenes (incompletely everted) of C. lefona sp. nov. in asulcal (left) and sulcal (right) view; note that characters can be seen only in completely everted hemipenes. Scale bars: 1.0 mm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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International Brain Laboratory public data
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OpenNeuro
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