The New Encyclopædia Britannica, Volume 16Encyclopaedia Britannica, 1981 - Encyclopedias and dictionaries |
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Page 164
... PRESENT REEF ACCUMULATION Tropical water conditions . Water conditions favour- able to the growth of reefs exist in tropical or near - tropi- cal surface waters . Regional differences may result from the presence or absence of upwelling ...
... PRESENT REEF ACCUMULATION Tropical water conditions . Water conditions favour- able to the growth of reefs exist in tropical or near - tropi- cal surface waters . Regional differences may result from the presence or absence of upwelling ...
Page 315
... present , are formed by modi- fications of parts of appendages , most often the epipo- dites . These thin - walled , lamellate structures are present on some or all of the thoracic appendages in cephalo- carids , fairy shrimps , and ...
... present , are formed by modi- fications of parts of appendages , most often the epipo- dites . These thin - walled , lamellate structures are present on some or all of the thoracic appendages in cephalo- carids , fairy shrimps , and ...
Page 318
... present , worldwide , marine to brackish water . Sedentary or parasitic ; head usually reduced and abdomen lost . Carapace usually an enveloping mantle ; 6 pairs of trunk limbs ( cirri ) ; nauplius with a pair of lateral horns . Usually ...
... present , worldwide , marine to brackish water . Sedentary or parasitic ; head usually reduced and abdomen lost . Carapace usually an enveloping mantle ; 6 pairs of trunk limbs ( cirri ) ; nauplius with a pair of lateral horns . Usually ...
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