The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 2005 |
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Page 311
... Bivalves ( clams , oysters , mussels , and relatives ) The class Bivalvia , sometimes called Pelecypoda , is char- acterized by a shell that is divided from front to back into left and right valves . Enclosure in a shell has resulted in ...
... Bivalves ( clams , oysters , mussels , and relatives ) The class Bivalvia , sometimes called Pelecypoda , is char- acterized by a shell that is divided from front to back into left and right valves . Enclosure in a shell has resulted in ...
Page 312
... bivalve shells are used in the manufacture of jewelry and ornaments . Bivalves are important agents in bioerosion , most no- tably of calcium carbonate rocks and wood in the sea . Piddocks ( family Pholadidae ) bore into concrete ...
... bivalve shells are used in the manufacture of jewelry and ornaments . Bivalves are important agents in bioerosion , most no- tably of calcium carbonate rocks and wood in the sea . Piddocks ( family Pholadidae ) bore into concrete ...
Page 316
... bivalves ( e.g. , Palaeotaxodonta ) there are four pairs of ganglia - cerebral , pleural , pedal , and visceral . In all other bivalves the cerebral and pleural ganglia are fused into two cerebropleural ganglia , located above and on ...
... bivalves ( e.g. , Palaeotaxodonta ) there are four pairs of ganglia - cerebral , pleural , pedal , and visceral . In all other bivalves the cerebral and pleural ganglia are fused into two cerebropleural ganglia , located above and on ...
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albite amphiboles ancient aragonite areas atoms basalt bivalves body calcite calcium called carbonate central centre century cephalopods chemical clay minerals colour common composition contain crust crystals ctenidia cult cultural deities deposits developed dolomite Earth economic eggs electron evaporite example existence facies feldspar Figure garnet gastropods goddess gods grains Hittite human igneous rocks important industrial kaolinite king known layers limestone magma magnetic major mantle cavity marine material mental metamorphic rocks metaphysics Mexican Mexico City mica Michelangelo microscope millimetres Milton mimicry mind Mineralogy modern Molière Mongolia Mongols Moscow myth nature object occur ocean olivine organic originally oxide percent period philosophers physical plagioclase political population pressure produced properties pyroxene quartz reaction region religion religious reprinted result sandstones sedimentary rocks sediments shell silicate smectite snails society species structure Sumerian surface temperature temple tetrahedrons texture tion typically United urban volcanic