| 单词 | olivella | 
| 释义 | Olivellan. Zoology.   A genus of small gastropod molluscs of warm and tropical seas (family  Olividae), having glossy cylindrical shells; (also  olivella) a snail of this genus. Also: the shell of such a snail, formerly used as beads and as currency. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > 			[noun]		 > other types of gastropod mollusc purpura1598 patella1671 canoe-shell1711 oliva1823 monoceros1828 Olivella1835 holostome1864 sundial1868 archaeogastropod1955 1835    W. Swainson Elem. Mod. Conchol. ii. 15  				Among the Olives (Olivinae) there are but few genera... Olivella..; pillar with two strong basal plaits. 1874    J. D. Dana Man. Geol. 		(ed. 2)	 508  				Characteristic species... Lignitic period... In California, in the Tejon group, occur..species of Ammonites..Fusus..Olivella..Natica [etc.]. 1894    Amer. Naturalist 28 914  				Those species which have a very extended mantle, with hardly an exception have a lirate aperture (Oliva, Olivella, Cypræa, Trivia, etc.) 1919    Man 19 35  				It is dressed with feathers and encircled with a string of precious beads—..together with olivella or abalone shells. 1952    A. M. Keen  & J. C. Pearson Illustr. Key to Western N. Amer. Gastropod Genera 24/1  				Shell highly polished, smooth... Olivella. 1991    Antiquity 65 960/1  				One type of bead was reportedly employed as a form of currency governing regional exchange... This was a type of Olivella shell callus bead, a form costly to make. 2000    S. Moczygemba-Mckinsey  & D. E. Stuart Anasazi Amer. viii. 156  				Moderate quantities of abalone and olivella shell..came from both the Pacific coast of California and the bays of Sonora. This is a new entry (OED Third Edition, March 2004; most recently modified version published online March 2022). <  | 
	
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