- primibrachs
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руки первого порядка
English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
primibrachs — n. pl. [L. primus, first; Gr. brachion, upper arm] (ECHINODERMATA: Crinoidea) All brachials of an unbranched arm; there are usually 2, the second of which is an axillary … Dictionary of invertebrate zoology