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Polypterus senegalus Stock Photos and Images
RMRDKFB8–. The Cambridge natural history. Zoology. 484 FISHES lower lobe of the caudal. The fin-rays which support the ventral portion of the caudal fin are more numerous and longer than those in relation with the dorsal lobe, and hence at this stage the tail is really heterocercal.. T?ia. 281.—Larva of Polypterus senegalus. x 4. Showing its characteristio attitude when resting on the bottom of an aquarium, and the large size of the cutaneous gills. (Prom Budgett.) In the genus CalamicMhys the body is greatly elongate and Eel-like in shape. Pelvic fins are absent, and normally there is no suboperculum.
![. Animal biology. Zoology; Biology. FiG. 245.—A crossopterygian. Polypterus senegalus Cuvier. o, the adult. X H- h, the larva. X 2%. {a from Bridge, "'Cambridge Natural History," b after Budgett, by the courtesy of The Macmillan Company.) The latter figure does not show the fact that the gills are alternately long and short. The arrow and line in Fig. a point to the position of the left spiracle. tilaginous, but the cartilage is overlaid with dermal bones. The sturgeons (Fig. 246) and spoonbills are the living representatives of this group.. Please note that these images are extracte Stock Photo](https://c8.alamy.com/comp/RN5F40/animal-biology-zoology-biology-fig-245a-crossopterygian-polypterus-senegalus-cuvier-o-the-adult-x-h-h-the-larva-x-2-a-from-bridge-quotcambridge-natural-historyquot-b-after-budgett-by-the-courtesy-of-the-macmillan-company-the-latter-figure-does-not-show-the-fact-that-the-gills-are-alternately-long-and-short-the-arrow-and-line-in-fig-a-point-to-the-position-of-the-left-spiracle-tilaginous-but-the-cartilage-is-overlaid-with-dermal-bones-the-sturgeons-fig-246-and-spoonbills-are-the-living-representatives-of-this-group-please-note-that-these-images-are-extracte-RN5F40.jpg ". Animal biology. Zoology; Biology. FiG. 245.—A crossopterygian. Polypterus senegalus Cuvier. o, the adult. X H- h, the larva. X 2%. {a from Bridge, "'Cambridge Natural History," b after Budgett, by the courtesy of The Macmillan Company.) The latter figure does not show the fact that the gills are alternately long and short. The arrow and line in Fig. a point to the position of the left spiracle. tilaginous, but the cartilage is overlaid with dermal bones. The sturgeons (Fig. 246) and spoonbills are the living representatives of this group.. Please note that these images are extracte Stock Photo"){kind=icon}
RMRN5F40–. Animal biology. Zoology; Biology. FiG. 245.—A crossopterygian. Polypterus senegalus Cuvier. o, the adult. X H- h, the larva. X 2%. {a from Bridge, "'Cambridge Natural History," b after Budgett, by the courtesy of The Macmillan Company.) The latter figure does not show the fact that the gills are alternately long and short. The arrow and line in Fig. a point to the position of the left spiracle. tilaginous, but the cartilage is overlaid with dermal bones. The sturgeons (Fig. 246) and spoonbills are the living representatives of this group.. Please note that these images are extracte
![. Animal biology. Zoology; Biology. FiG. 245.—A crossopterygian. Polypterus senegalus Cuvier. o, the adult. X H- h, the larva. X 2%. {a from Bridge, "'Cambridge Natural History," b after Budgett, by the courtesy of The Macmillan Company.) The latter figure does not show the fact that the gills are alternately long and short. The arrow and line in Fig. a point to the position of the left spiracle. tilaginous, but the cartilage is overlaid with dermal bones. The sturgeons (Fig. 246) and spoonbills are the living representatives of this group.. Fig. 246.—Lake sturgeon, Acipenser rMWcMW^ Stock Photo](https://c8.alamy.com/comp/RN5F3F/animal-biology-zoology-biology-fig-245a-crossopterygian-polypterus-senegalus-cuvier-o-the-adult-x-h-h-the-larva-x-2-a-from-bridge-quotcambridge-natural-historyquot-b-after-budgett-by-the-courtesy-of-the-macmillan-company-the-latter-figure-does-not-show-the-fact-that-the-gills-are-alternately-long-and-short-the-arrow-and-line-in-fig-a-point-to-the-position-of-the-left-spiracle-tilaginous-but-the-cartilage-is-overlaid-with-dermal-bones-the-sturgeons-fig-246-and-spoonbills-are-the-living-representatives-of-this-group-fig-246lake-sturgeon-acipenser-rmwcmw-RN5F3F.jpg ". Animal biology. Zoology; Biology. FiG. 245.—A crossopterygian. Polypterus senegalus Cuvier. o, the adult. X H- h, the larva. X 2%. {a from Bridge, "'Cambridge Natural History," b after Budgett, by the courtesy of The Macmillan Company.) The latter figure does not show the fact that the gills are alternately long and short. The arrow and line in Fig. a point to the position of the left spiracle. tilaginous, but the cartilage is overlaid with dermal bones. The sturgeons (Fig. 246) and spoonbills are the living representatives of this group.. Fig. 246.—Lake sturgeon, Acipenser rMWcMW^ Stock Photo"){kind=icon}
RMRN5F3F–. Animal biology. Zoology; Biology. FiG. 245.—A crossopterygian. Polypterus senegalus Cuvier. o, the adult. X H- h, the larva. X 2%. {a from Bridge, "'Cambridge Natural History," b after Budgett, by the courtesy of The Macmillan Company.) The latter figure does not show the fact that the gills are alternately long and short. The arrow and line in Fig. a point to the position of the left spiracle. tilaginous, but the cartilage is overlaid with dermal bones. The sturgeons (Fig. 246) and spoonbills are the living representatives of this group.. Fig. 246.—Lake sturgeon, Acipenser rMWcMW^
![. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. ?^^. Fig. 18.—Polypterus Hcneyulus larva, 14 in. long, in a very cliaracteristie atlitiulo. After Budgett. At last, during a third voyage to Africa, in southern Nigeria in the months of August and September, 11)03, Budgett succeeded in obtaining eggs and milt of Polypterus senegalus in proper con- dition and time. He was " able to fertilize a large quantity of eggs." The earl}" development was found to be very similar to that Stock Photo](https://c8.alamy.com/comp/RM3AG7/annual-report-of-the-board-of-regents-of-the-smithsonian-institution-smithsonian-institution-smithsonian-institution-archives-discoveries-in-science-fig-18polypterus-hcneyulus-larva-14-in-long-in-a-very-cliaracteristie-atlitiulo-after-budgett-at-last-during-a-third-voyage-to-africa-in-southern-nigeria-in-the-months-of-august-and-september-1103-budgett-succeeded-in-obtaining-eggs-and-milt-of-polypterus-senegalus-in-proper-con-dition-and-time-he-was-quot-able-to-fertilize-a-large-quantity-of-eggsquot-the-earlquot-development-was-found-to-be-very-similar-to-that-RM3AG7.jpg ". Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. ?^^. Fig. 18.—Polypterus Hcneyulus larva, 14 in. long, in a very cliaracteristie atlitiulo. After Budgett. At last, during a third voyage to Africa, in southern Nigeria in the months of August and September, 11)03, Budgett succeeded in obtaining eggs and milt of Polypterus senegalus in proper con- dition and time. He was " able to fertilize a large quantity of eggs." The earl}" development was found to be very similar to that Stock Photo")
RMRM3AG7–. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. ?^^. Fig. 18.—Polypterus Hcneyulus larva, 14 in. long, in a very cliaracteristie atlitiulo. After Budgett. At last, during a third voyage to Africa, in southern Nigeria in the months of August and September, 11)03, Budgett succeeded in obtaining eggs and milt of Polypterus senegalus in proper con- dition and time. He was " able to fertilize a large quantity of eggs." The earl}" development was found to be very similar to that
RMRGJY47–. Bulletin of the British Museum (Natural History), Geology. 3i8 EVOLUTION OF THE SNOUT IN ACTINOPTERYGIANS Finally, anastomosis of the infraorbital sensory canal with the supraorbital canal can take place at a later stage if the two components lie close enough together. This has occurred in the Recent Polypterus senegalus (Text-fig. 20D) and in the Recent Lepisosteus osseus (Text-fig. 19M), while a similar condition is observable in Paraccntrophorus madagascariensis (Text-fig. 19G) from the Lower Triassic. ethc. Ant ethc. Please note that these images are extracted from scanned page images th
RMRDKFB1–. The Cambridge natural history. Zoology. T?ia. 281.—Larva of Polypterus senegalus. x 4. Showing its characteristio attitude when resting on the bottom of an aquarium, and the large size of the cutaneous gills. (Prom Budgett.) In the genus CalamicMhys the body is greatly elongate and Eel-like in shape. Pelvic fins are absent, and normally there is no suboperculum. The dorsal finlets are more isolated than in Polyipterus, and each spine supports but a single soft ray. Only a single species is known, C. calaharicus'^ (Fig. 282).. Fig. 2i2.—Calamichthys calaiaricus. x |. (From a specimen in the C
![. Bulletin of the British Museum (Natural History), Geology. nci] R.pmx.ant. ethc x.lnf D Fig. 20. a. Acipenser slurio Linnaeus. Recent, b. Birgeria groenlandica Stensio. Lower Triassic. After Nielsen, 1949. c. Haplolepis tuberculata (Newberry). Upper Carboniferous. After Westoll, 1944. d. Polypterus senegalus Cuvier. Recent. Partly after Jarvik, 1942. IV. SUMMARY This paper is intended as a clearing of the ground for a revision of the palaeoniscoid fauna of the British Carboniferous. The type species of four genera from this fauna are redescribed, and for comparative purposes members of four Stock Photo](https://c8.alamy.com/comp/RGJY35/bulletin-of-the-british-museum-natural-history-geology-nci-rpmxant-ethc-xlnf-d-fig-20-a-acipenser-slurio-linnaeus-recent-b-birgeria-groenlandica-stensio-lower-triassic-after-nielsen-1949-c-haplolepis-tuberculata-newberry-upper-carboniferous-after-westoll-1944-d-polypterus-senegalus-cuvier-recent-partly-after-jarvik-1942-iv-summary-this-paper-is-intended-as-a-clearing-of-the-ground-for-a-revision-of-the-palaeoniscoid-fauna-of-the-british-carboniferous-the-type-species-of-four-genera-from-this-fauna-are-redescribed-and-for-comparative-purposes-members-of-four-RGJY35.jpg ". Bulletin of the British Museum (Natural History), Geology. nci] R.pmx.ant. ethc x.lnf D Fig. 20. a. Acipenser slurio Linnaeus. Recent, b. Birgeria groenlandica Stensio. Lower Triassic. After Nielsen, 1949. c. Haplolepis tuberculata (Newberry). Upper Carboniferous. After Westoll, 1944. d. Polypterus senegalus Cuvier. Recent. Partly after Jarvik, 1942. IV. SUMMARY This paper is intended as a clearing of the ground for a revision of the palaeoniscoid fauna of the British Carboniferous. The type species of four genera from this fauna are redescribed, and for comparative purposes members of four Stock Photo")
RMRGJY35–. Bulletin of the British Museum (Natural History), Geology. nci] R.pmx.ant. ethc x.lnf D Fig. 20. a. Acipenser slurio Linnaeus. Recent, b. Birgeria groenlandica Stensio. Lower Triassic. After Nielsen, 1949. c. Haplolepis tuberculata (Newberry). Upper Carboniferous. After Westoll, 1944. d. Polypterus senegalus Cuvier. Recent. Partly after Jarvik, 1942. IV. SUMMARY This paper is intended as a clearing of the ground for a revision of the palaeoniscoid fauna of the British Carboniferous. The type species of four genera from this fauna are redescribed, and for comparative purposes members of four
Search Results for Polypterus senegalus Stock Photos and Images (24)
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