| 单词 | pectinirhomb | 
| 释义 | > as lemmaspectinirhomb   pectinirhomb  n.  Brit. , U.S. Palaeontology (in certain rhombiferan echinoderms) a complex type of pore rhomb with comb-like parallel slits and a raised external rim; cf. earlier pectinated rhomb n. at pectinated adj. Compounds. ΚΠ 1899    F. A. Bather in  Rep. Brit. Assoc. Advancem. Sci. 1898 917  				The need for compensating this restriction of the assumed respiratory area led to the specialisation of the remaining pore-rhombs as ‘pectini-rhombs’. 1961    J. Stubblefield Davies's Introd. Palaeontol. 		(ed. 3)	 viii. 196  				Lepadocrinus..shows a remarkable specialization of a few (usually three) of the rhombs into large pectinirhombs with all the appearance of respiratory organs (gills). 1994    Jrnl. Paleontol. 68 324  				Cuniculocystis floweri..appears to be a typical rhombiferan in most of its morphologic features except that it lacks pectinirhombs. < as lemmas | 
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