| 单词 | cestracion | 
| 释义 | Cestracionn. Zoology.   A kind of shark now peculiar to Australia; the Port Jackson shark. It has sharp teeth in front, and flat pavement-like teeth behind, and has a spine in front of each dorsal fin. ΘΚΠ the world > animals > fish > subclass Elasmobranchii > order Pleurotremata > 			[noun]		 > member of family Heterodontidae (Port Jackson shark) Port Jackson1789 pigfish1807 cestraciont1847 Cestracion1876 1876    D. Page Adv. Text-bk. Geol. 		(ed. 6)	 xvii. 320  				Shark-like genera resembling the cestracion of Australian seas. This entry has not yet been fully updated (first published 1889; most recently modified version published online June 2018). < | 
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