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Do all fishes have scales? ... How many types of scales are there? ... Are all scales the same size?
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australianmuseum.net.au/fish-scales
australianmuseum.net.au/fish-scales
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Scale (zoology) - Wikipedia, the free encyclopedia
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In most biological nomenclature, a scale (Greek lepid , Latin squama ) is a small rigid plate that grows out of an animal's skin to provide protection. In lepidopteran (butterfly and moth) speci...
en.wikipedia.org/wiki/Scale_(zoology)
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Placoid scales (dermal denticles) are tough scales that cover the skin of elasmobranchs (sharks and rays). Even though placoid scales are similar to the scales of bony fish, they are really modified teeth and are covered with a hard enamel. ... Placoid scales are packed tightly together and grow with their tips facing backwards.
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marinelife.about.com/od/glossary/g/placoidscales.htm
marinelife.about.com/od/glossary/g/placoidscales.htm
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c. Teeth are modified, enlarged placoid scales. Sharks have numerous rows of teeth attached at their bases by connective tissue. Several rows of replacement teeth continually develop behind the outer row(s) of functional teeth.
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www.seaworld.org/infobooks/sharks&rays/physical.html
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Detailed studies of the development of placoid scales were reported by Hertwig (1874). His descriptions of certain integumentary scales and of stomodeal denticles have been supplemented by Steinhard;
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www.biolbull.org/cgi/reprint/73/1/51.pdf
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The new coating is modeled after sharks’ placoid scales, which have a rectangular base embedded in the skin with tiny spines or bristles that poke up from the surface that prevent things from attaching to the shark’s skin.
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www.schmahlscience.org/blog/?tag=placoid-scales
www.schmahlscience.org/blog/?tag=placoid-scales
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Scales are small plates that form part of the skin of certain animals.e ... Scales are small plates that form part of the skin of certain animals. They provide protection from the environment and from predators. Sharks have placoid scales, bony, spiny projections with an enamel-like covering.
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www.olympusmicro.com/micd/galleries/oblique/fishscale.h...
www.olympusmicro.com/micd/galleries/oblique/fishscale.html
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Scales are small plates that form part of the skin of certain animals. They provide protection from the environment and from predators. Sharks have placoid scales, bony, spiny projections with an enamel-like covering.
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www.olympusmicro.com/micd/galleries/brightfield/dogfish...
www.olympusmicro.com/micd/galleries/brightfield/dogfishplacoidscales.html
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saltwater crocodile, placoid scales, great white shark: Hi, again Eugene Yep, Shark skin can cut just by touch. These are placoid scales which cover the Shark s skin they are very sharp and small, and often scientists will cut there hands dissecting Sharks. ... Who do you think would win if they fought? ... Although in deep,
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en.allexperts.com/q/Interspecies-Conflict-3754/Saltwate...
en.allexperts.com/q/Interspecies-Conflict-3754/Saltwater-Croc-vs-Great.htm
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