| 单词 | pallial sinus |
| 释义 | > as lemmaspallial sinus pallial sinus n. Zoology an indentation in the pallial line, representing the position of the siphons. ΚΠ 1858 Rep. N. Carolina Geol. Surv. (N. Carolina State Geologist) 297 Tellina Lusoria... Pallial sinus deep; concentrically striate. 1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) ii. 57 In the Aralo-Caspian region, from Miocene to Recent, are found Adacna and Limnocardium, cockles adapted to a freshwater or brackish habitat, with long siphons and a pallial sinus. 1995 P. J. Hayward et al. in P. J. Hayward & J. S. Ryland Handbk. Marine Fauna N.W. Europe x. 573/2 Posteriorly, this [sc. the pallial line] may show an indentation (pallial sinus) indicating the position of the retracted siphons in the closed shell. < as lemmas |
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