The New Encyclopaedia Britannica, Volumes 1-10Encyclopaedia Britannica, 1974 - Reference [1] Propaedia: outline of knowledge and guide to the Britannica.--[2]-[11] Micropaedia: ready reference and index.--[12]-[30] Macropaedia: knowledge in depth. |
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Page 270
... dorsal and anal fins : probably they swim by undulating these fins rather ... fin- rays . All are slow swimmers , and the larger forms , the opah and the ... fin is usually asym- metrical , with the lower lobe longer than the upper , and ...
... dorsal and anal fins : probably they swim by undulating these fins rather ... fin- rays . All are slow swimmers , and the larger forms , the opah and the ... fin is usually asym- metrical , with the lower lobe longer than the upper , and ...
Page 272
... fin containing 19 principal rays , which insert on six hypural bones ... dorsal , anal , and pelvic fins ; bony contact between the pelvic and ... fin spines tend to be absent , the pelvic fins have moved back to the abdomen , and the ...
... fin containing 19 principal rays , which insert on six hypural bones ... dorsal , anal , and pelvic fins ; bony contact between the pelvic and ... fin spines tend to be absent , the pelvic fins have moved back to the abdomen , and the ...
Page 273
... fin spines reduced ; bathypelagic , worldwide ; 3 genera . Family ... dorsal and anal fins . Inshore temperate and tropi- cal marine waters ... fin modified , in males , for clasping fe- male in mating . One genus , freshwater , India ...
... fin spines reduced ; bathypelagic , worldwide ; 3 genera . Family ... dorsal and anal fins . Inshore temperate and tropi- cal marine waters ... fin modified , in males , for clasping fe- male in mating . One genus , freshwater , India ...
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The New Encyclopaedia Britannica, Volumes 1-10 Encyclopaedia Britannica Publishers, Inc. Staff No preview available - 1974 |
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19th century aesthetic ancient areas armour army arthropods artiodactyls artists aschelminths Asia Asian Assam Asterales astronomical atheism Athens atheriniforms Atlantic atmosphere atoms Basin beryciforms Cenozoic Central centre China climate countries criticism culture early Earth East economic effect electrons elements energy exosphere Finland forces forest fossil France function galaxies Games gases gastrotrichs German Greek groups Gt.Brit heterosphere Hittite homosphere hydrogen important increase India Indonesia industrial Italy Japan kilometres layer lines literature mass ment metres miles military modern molecules mountain North occur Ocean Olympic orbit organization original oxygen painting particles percent period planets Pleistocene political population priapulids produced radiation radio range region religion result rotifers Siberia social society solar South Southeast Southeast Asia southern Soviet species spectra spectrum stars structure style surface Sweden temperature theory tion tradition ture types usually wavelengths western zone