| 单词 | pseudodeltidium | 
| 释义 | > as lemmaspseudodeltidium   pseudodeltidium  n.  Brit.  , U.S.   Palaeontology (in certain fossil brachiopods) a single flat or convex plate which occurs instead of a deltidium and does not always completely cover the space between the beak and the hinge.ΚΠ 1863    J. D. Dana Man. Geol. 180  				A triangular prominence called a pseudo-deltidium. 1993    E. N. K. Clarkson Invertebr. Palaeontol. & Evol. 		(ed. 3)	 vii. 177/1  				Suborder 2. Clitambonitidina (Ord.): Wide-hinged impunctate pseudopunctate shells, having pronounced pseudodeltidium. < as lemmas  | 
	
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