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350 results for “Guiana Shield”
FIGURE 2 in Glassfrogs (Anura: Centrolenidae) of Kaieteur National Park, Guyana, with notes on the distribution and taxonomy of some species of the family in the Guiana Shield
FIGURE 2. Names and locations of fringes and folds that are of diagnostic importance in Centrolenidae. Left: HAND ULNA (1) fringe on postaxial edge of Finger IV; (2) metacarpal fold; (3) ulnar fold. Right: FOOT TARSUS (4) fringe on postaxial edge of Toe V; (5) metatarsal fold; (6) tarsal fold; (7) tarsal fringe.
FIGURE 14 in Glassfrogs (Anura: Centrolenidae) of Kaieteur National Park, Guyana, with notes on the distribution and taxonomy of some species of the family in the Guiana Shield
FIGURE 14. Hand (left) and foot (right) of Hyalinobatrachium taylori (IRSNB 13984) from Kaieteur National Park, Guyana. Scale bars = 2 mm. Photographs Philippe J. R. Kok.
FIGURE 6 in Glassfrogs (Anura: Centrolenidae) of Kaieteur National Park, Guyana, with notes on the distribution and taxonomy of some species of the family in the Guiana Shield
FIGURE 6. Hand (left) and foot (right) of Centrolene gorzulai (IRSNB 13976) from Kaieteur National Park, Guyana. Scale bars = 2 mm. Photographs Philippe J. R. Kok.
FIGURE 11 in Glassfrogs (Anura: Centrolenidae) of Kaieteur National Park, Guyana, with notes on the distribution and taxonomy of some species of the family in the Guiana Shield
FIGURE 11. (A) Ventral view of Cochranella oyampiensis in life; (B) dorsal view of the same specimen in life (MB292, Aya/Trinité, French Guiana); (C) ventral view of Cochranella midas in life (MB299, Aya/Trinité, French Guiana); (D) dorsolateral view of Cochranella midas in life (MB204, Crique Grand Leblond, French Guiana). Photographs courtesy of Michel Blanc.
FIGURE 1 in Glassfrogs (Anura: Centrolenidae) of Kaieteur National Park, Guyana, with notes on the distribution and taxonomy of some species of the family in the Guiana Shield
FIGURE 1. Map of Kaieteur National Park with main sampling localities (numbered dots) and local distributions of Centrolene gorzulai (blue), Cochranella helenae (green), and Hyalinobatrachium taylori (red). (1) Kaieteur Falls; (2) Menzies Landing trail; (3) Kaieteur airstrip; (4) Muri Muri trail; (5) Right bank Potaro River, opposite Menzies Landing; (6) Tukeit trail; (7) Tukeit Landing; (8) Elinkwa River mouth; (9) Elinkwa River; (10) Elinkwa camp #1; (11) Elinkwa camp #2; (12) Amakwa River mouth; (13) Amamuri River mouth. Insert map indicates the location of Kaieteur National Park in Guyana. Map after the Natural Resources Management Project, Topographic Map of Kaieteur National Park, Guyana.
Distribution. Brazilian Amazon, S of the Rio Amazonas between the lower Rio Tocantins and Rio Tapajos, S along the right bank of the Tapajos to the Rio Cupari and left bank of the Rio Tocantins to c.4° S; between the Xingu and Tocantins, its distribution is delimited by submontane and montane forests of the Guiana Shield. in Callitrichiade
Distribution. Brazilian Amazon, S of the Rio Amazonas between the lower Rio Tocantins and Rio Tapajos, S along the right bank of the Tapajos to the Rio Cupari and left bank of the Rio Tocantins to c.4° S; between the Xingu and Tocantins, its distribution is delimited by submontane and montane forests of the Guiana Shield.
Distribution. Amazonian Basin and Guianan Shield in Colombia E of Andes, Venezuela, the Guianas, E Ecuador, Peru, Brazil, and N & C Bolivia. in Phyllostomidae
Distribution. Amazonian Basin and Guianan Shield in Colombia E of Andes, Venezuela, the Guianas, E Ecuador, Peru, Brazil, and N & C Bolivia.
Subspecies and Distribution. C.o.olivaceusSchomburgk,1848—mightberestrictedtotheVenezuelanAmazonBasinfromtheupperRioOrinoco,andthroughouttheOrinocosavannaabovethemouthoftheRioMeta,asfarNandWastheSierradePerijaandtheVenezuelanC.o.dela C.o. (C.o. Range), to the left bank of the Rio Essequibo in W Guyana, in forests of the Guiana Shield; distributional limits separating the two subspecies are not well known. C. o. castaneus 1. Geoffroy Saint-Hilaire, 1851 — Guianas (possibly from the Rio Essequibo in Guyana E through Suriname and French Guiana) and N Brazil, where its distributional limits are not well known but are possibly marked by the rios Negro and Branco and Catrimani (right bank affluent of the Rio Branco) in the W, the Rio Amazonas in the S, and the Atlantic coast in the E, and it also occurs on Caviana and Mexiana Is in the estuary of the Rio Amazonas. Small numbers introduced as pets are now feral on Margarita I off the Venezuelan coast. in Cebidae
Subspecies and Distribution. C.o.olivaceusSchomburgk,1848—mightberestrictedtotheVenezuelanAmazonBasinfromtheupperRioOrinoco,andthroughouttheOrinocosavannaabovethemouthoftheRioMeta,asfarNandWastheSierradePerijaandtheVenezuelanC.o.dela C.o. (C.o. Range), to the left bank of the Rio Essequibo in W Guyana, in forests of the Guiana Shield; distributional limits separating the two subspecies are not well known. C. o. castaneus 1. Geoffroy Saint-Hilaire, 1851 — Guianas (possibly from the Rio Essequibo in Guyana E through Suriname and French Guiana) and N Brazil, where its distributional limits are not well known but are possibly marked by the rios Negro and Branco and Catrimani (right bank affluent of the Rio Branco) in the W, the Rio Amazonas in the S, and the Atlantic coast in the E, and it also occurs on Caviana and Mexiana Is in the estuary of the Rio Amazonas. Small numbers introduced as pets are now feral on Margarita I off the Venezuelan coast.
FIGURE. Distribution of Dicorynia. Physical map of the Amazonian region with all analyzed specimens of Dicorynia. A large amount of point overlays leading to reduced number of visible points is due to the large percentage of materials being old collections that rely only on the name of the municipality or similar. Source: NASA with modifications. Note that almost all specimens are contained in areas with less than 200 m high and the high elevations of the Guiana shield may represent a form of isolation between the two species. in A Taxonomic Revision of the Amazonian Genus Dicorynia (Fabaceae: Dialioideae)
FIGURE. Distribution of Dicorynia. Physical map of the Amazonian region with all analyzed specimens of Dicorynia. A large amount of point overlays leading to reduced number of visible points is due to the large percentage of materials being old collections that rely only on the name of the municipality or similar. Source: NASA with modifications. Note that almost all specimens are contained in areas with less than 200 m high and the high elevations of the Guiana shield may represent a form of isolation between the two species.
FIGURE 7. A–C, Rudgea hostmanniana. A in The Rudgea hostmanniana complex (Rubiaceae) in the Guiana Shield region
FIGURE 7. A–C, Rudgea hostmanniana. A, inflorescence; B, leaf abaxial side; C, fruits. D–F, Rudgea pungens. D, infructescence, top view; E, infructescence, lateral view; F, stipule. Voucher collections: A–C, plant not collected (Kourou, French Guiana), D–F Lachenaud 1720. A–C Photos by P. Petronelli, D–F photos by O. Lachenaud.
FIGURE 6 in The Rudgea hostmanniana complex (Rubiaceae) in the Guiana Shield region
FIGURE 6. Distribution of Rudgea coussareoides (squares), R. hostmanniana subsp. hostmanniana (triangles) and R. maypurensis (circles).
FIGURE 3. Rudgea billietiae. A in The Rudgea hostmanniana complex (Rubiaceae) in the Guiana Shield region
FIGURE 3. Rudgea billietiae. A, flowering branch; B, fruiting branch; C, terminal bud; D, stipules of an older node (dorsal appendages fallen off); E, base of inflorescence and broken stipules of the upper node; F, flower bud; G, flower; H, fruit and portion of infructescence; I, cross-section of fruit. A, E, G from Billiet & Jadin 7456 (BR), B–C and H–I from Lachenaud 1643 (BR), D, F from Lachenaud 1878 (BR). Drawing by O. Lachenaud.
FIGURE 2 in The Rudgea hostmanniana complex (Rubiaceae) in the Guiana Shield region
FIGURE 2. Calyx and corolla in the Rudgea hostmanniana complex. A, R. bolivarensis, calyx; B, R. coussareoides, calyx; C, R. cornigera, flower bud; D, R. hostmanniana subsp. hostmanniana, flower bud; E, R. maypurensis, flower bud; F, R. tanaosepala, flower bud. A from Henkel 5675 (U), B from Liesner 24924 (K), C from Procter 4769 (U), D from Lachenaud 981 (BR), E from Plowman 13733 (K), F from Clarke & Hoffman 584 (U). Drawing by O. Lachenaud.
FIGURE 1 in The Rudgea hostmanniana complex (Rubiaceae) in the Guiana Shield region
FIGURE 1. Stipules in the Rudgea hostmanniana complex. A, R. bolivarensis; B, R. coussareoides; C, R. cornigera; D, R. hostmanniana subsp. hostmanniana; E, R. maypurensis; F, R. tanaosepala. A from Mutchnick 1620 (K), B from Diaz et al. 7727A (K), C from Schulz 7539 (U), D from Lachenaud 1011 (BR), E from Williams 12972 (K), F from Clarke & Hoffman 584 (U). Drawing by O. Lachenaud.
FIGURE 4. Rudgea billietiae. A in The Rudgea hostmanniana complex (Rubiaceae) in the Guiana Shield region
FIGURE 4. Rudgea billietiae. A, inflorescence; B, fruiting branch; C, immature fruits; D, leaf abaxial side; E, terminal bud; F, stipules from older node; G, mature fruits. Voucher collections: A Billiet & Jadin 7456, B–F Lachenaud 1643, G Lachenaud 1878. Photo A by F. Billiet, photos B–G by O. Lachenaud.
FIGURE 3 in A new Chiasmocleis (Anura: Microhylidae) from the eastern Guiana Shield with an amended definition of C. haddadi Peloso, Sturaro, Forlani, Gaucher, Motta, & Wheeler, 2014
FIGURE 3. Examples of sonograms (A) for each species and PCA (B) on the variables measured from the available records. Dotted frames depict the pattern that we considered to represent a "call" for each species.
FIGURE 2 in A new Chiasmocleis (Anura: Microhylidae) from the eastern Guiana Shield with an amended definition of C. haddadi Peloso, Sturaro, Forlani, Gaucher, Motta, & Wheeler, 2014
FIGURE 2. Morphometric analyses. (A) PCA on morphometric measurements; (B) PCA on residuals of the linear regression of measurements with SLV; (C) boxplot for SVL, and ratio of selected variables with SVL. SVL of the holotype of C. hudsoni is indicated with a red bar in the boxplot
FIGURE 1 in A new Chiasmocleis (Anura: Microhylidae) from the eastern Guiana Shield with an amended definition of C. haddadi Peloso, Sturaro, Forlani, Gaucher, Motta, & Wheeler, 2014
FIGURE 1. Maximum Likelihood phylogram (A) with collapsed branches and map (B) showing the distribution of the samples included in the phylogenetic analysis and type localities (stars) for each species.
FIGURE 5 in A new Chiasmocleis (Anura: Microhylidae) from the eastern Guiana Shield with an amended definition of C. haddadi Peloso, Sturaro, Forlani, Gaucher, Motta, & Wheeler, 2014
FIGURE 5. Pictures of in life specimens of the three species of the Chiasmocleis hudsoni clade of the Guiana Shield; and dorsal, ventral, palmar and plantar view of preserved holotype of C. jacki sp. nov.
FIGURE 6 in A new Chiasmocleis (Anura: Microhylidae) from the eastern Guiana Shield with an amended definition of C. haddadi Peloso, Sturaro, Forlani, Gaucher, Motta, & Wheeler, 2014
FIGURE 6. Comparison of living specimens of the three species of the Chiasmocleis hudsoni clade occurring in the Guiana Shield (left: C. jacki sp. nov.; middle: C. haddadi; right: C. hudsoni).
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