horn coral
Synonym of rugosan
(zoology) Any sea slug in the family Dendrodorididae.
(UK, aviation, travel) A free (or low cost) trip for travel agents or consultants, provided by a travel operator or airline as a means of promoting their service.
(mining) A stationary inclined platform on which pulverized ore is washed.
頁岩に埋まっていた化石の角状サンゴが見つかり、オルドビス紀の礁生態系の解明に役立った。
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DiQt
Free
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