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Five to seven gill slits Stock Photos and Images
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fin Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/sharks-are-a-group-of-elasmobranch-fish-characterized-by-a-cartilaginous-skeleton-five-to-seven-gill-slits-on-the-sides-of-the-head-and-pectoral-fin-image591897028.htmlRF2WAY6KG–Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fin
Devonian Cladoselache Shark -The Cladoselache was a carnivorous early shark that lived in the inland seas of North America during the Devonian Period. Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/devonian-cladoselache-shark-the-cladoselache-was-a-carnivorous-early-shark-that-lived-in-the-inland-seas-of-north-america-during-the-devonian-period-image223012575.htmlRFPXR2PR–Devonian Cladoselache Shark -The Cladoselache was a carnivorous early shark that lived in the inland seas of North America during the Devonian Period.
Shark superorder Selachimorpha fish cartilaginous skeleton streamlined body respire five to seven gill slits. Sharks have a cov Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/stock-photo-shark-superorder-selachimorpha-fish-cartilaginous-skeleton-streamlined-21999290.htmlRFB7P48X–Shark superorder Selachimorpha fish cartilaginous skeleton streamlined body respire five to seven gill slits. Sharks have a cov
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. CIRCULATORY ORGANS. 295 heart is purely venous and the only peculiarities to be mentioned are the following: In the elasmobranchs and ganoids the valves of the conus are arranged in several (3-8) rows, but in the teleosts (Butyrinus excepted) they are reduced to a single row, apparently corresponding to the first of the lower forms. In the latter group the bulbus is especially well developed. The aortic arches correspond in number to the functional gill slits—six or seven in the notidanid sharks, five in other Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/comparative-anatomy-of-vertebrates-anatomy-comparative-vertebrates-anatomy-circulatory-organs-295-heart-is-purely-venous-and-the-only-peculiarities-to-be-mentioned-are-the-following-in-the-elasmobranchs-and-ganoids-the-valves-of-the-conus-are-arranged-in-several-3-8-rows-but-in-the-teleosts-butyrinus-excepted-they-are-reduced-to-a-single-row-apparently-corresponding-to-the-first-of-the-lower-forms-in-the-latter-group-the-bulbus-is-especially-well-developed-the-aortic-arches-correspond-in-number-to-the-functional-gill-slitssix-or-seven-in-the-notidanid-sharks-five-in-other-image232666616.htmlRMREETJ0–. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. CIRCULATORY ORGANS. 295 heart is purely venous and the only peculiarities to be mentioned are the following: In the elasmobranchs and ganoids the valves of the conus are arranged in several (3-8) rows, but in the teleosts (Butyrinus excepted) they are reduced to a single row, apparently corresponding to the first of the lower forms. In the latter group the bulbus is especially well developed. The aortic arches correspond in number to the functional gill slits—six or seven in the notidanid sharks, five in other
shark superorder Selachimorpha fish water marine aquatic grey white orange fin teeth Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/stock-photo-shark-superorder-selachimorpha-fish-water-marine-aquatic-grey-white-22000985.htmlRFB7P6DD–shark superorder Selachimorpha fish water marine aquatic grey white orange fin teeth
. A textbook in general zoology. Zoology. 216 FISHES fishes. There may be a deposition of bony matter in cer- tain places — for example in the jaws and the vertebral col- miin. The jaw is large and strong and furnished with many teeth. The mouth of most sharks is on the under side of the head some little distance back of the end of the snout. Consequently, a shark usually turns on its back when seizing its prey The gill openings are from five to seven in number, on each side of the neck (see the hammer- headed shark, Fig. 151), and are simply long, narrow, uncov- ered slits. The larg- est of a Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/a-textbook-in-general-zoology-zoology-216-fishes-fishes-there-may-be-a-deposition-of-bony-matter-in-cer-tain-places-for-example-in-the-jaws-and-the-vertebral-col-miin-the-jaw-is-large-and-strong-and-furnished-with-many-teeth-the-mouth-of-most-sharks-is-on-the-under-side-of-the-head-some-little-distance-back-of-the-end-of-the-snout-consequently-a-shark-usually-turns-on-its-back-when-seizing-its-prey-the-gill-openings-are-from-five-to-seven-in-number-on-each-side-of-the-neck-see-the-hammer-headed-shark-fig-151-and-are-simply-long-narrow-uncov-ered-slits-the-larg-est-of-a-image232088731.htmlRMRDGFF7–. A textbook in general zoology. Zoology. 216 FISHES fishes. There may be a deposition of bony matter in cer- tain places — for example in the jaws and the vertebral col- miin. The jaw is large and strong and furnished with many teeth. The mouth of most sharks is on the under side of the head some little distance back of the end of the snout. Consequently, a shark usually turns on its back when seizing its prey The gill openings are from five to seven in number, on each side of the neck (see the hammer- headed shark, Fig. 151), and are simply long, narrow, uncov- ered slits. The larg- est of a
Shark Fishing fish boat fishermen hooking sea storm Sharks (superorder Selachimorpha) are a type of fish with a full cartilagino Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/stock-photo-shark-fishing-fish-boat-fishermen-hooking-sea-storm-sharks-superorder-22015013.htmlRFB7PTAD–Shark Fishing fish boat fishermen hooking sea storm Sharks (superorder Selachimorpha) are a type of fish with a full cartilagino
. Elements of zoölogy. Zoology. THE TRUE FISHES. 159 easily bent or cut with a knife. The bones that protect the gill-openings in bony fishes are wanting, the gills being mere slits,* from five to seven pairs, with intervening straps. The lobes of the tail are generally unequal.. Fig. 196. •A, egg of a shark, showing the anchor filaments, shark, showing the external gills (dr). B, embryo Order I. Plagiostomi. Nurse-Sharks (Scymm'da). —The nurse or sleeper is a sluggish shark found upon the eastern coast of North America, occasionally attaining a length of twenty feet. A nurse-shark of southern Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/elements-of-zology-zoology-the-true-fishes-159-easily-bent-or-cut-with-a-knife-the-bones-that-protect-the-gill-openings-in-bony-fishes-are-wanting-the-gills-being-mere-slits-from-five-to-seven-pairs-with-intervening-straps-the-lobes-of-the-tail-are-generally-unequal-fig-196-a-egg-of-a-shark-showing-the-anchor-filaments-shark-showing-the-external-gills-dr-b-embryo-order-i-plagiostomi-nurse-sharks-scymmda-the-nurse-or-sleeper-is-a-sluggish-shark-found-upon-the-eastern-coast-of-north-america-occasionally-attaining-a-length-of-twenty-feet-a-nurse-shark-of-southern-image231432452.htmlRMRCEJCM–. Elements of zoölogy. Zoology. THE TRUE FISHES. 159 easily bent or cut with a knife. The bones that protect the gill-openings in bony fishes are wanting, the gills being mere slits,* from five to seven pairs, with intervening straps. The lobes of the tail are generally unequal.. Fig. 196. •A, egg of a shark, showing the anchor filaments, shark, showing the external gills (dr). B, embryo Order I. Plagiostomi. Nurse-Sharks (Scymm'da). —The nurse or sleeper is a sluggish shark found upon the eastern coast of North America, occasionally attaining a length of twenty feet. A nurse-shark of southern
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