…However, in 1953, during a study of benthic organisms on the shores of Long Island Sound in New England, on the Atlantic coast of North America, a tiny crustacean with a body length of 2-3 mm was found among small animals collected from the muddy bottom at a depth of 9-20 m. As a result of the study, a new species was named and described as Hutchinsoniella macracantha (1955). This tiny crustacean is different from the Branchiopod subclass, which includes the baleen shrimps, which had been considered the most primitive of modern crustaceans, but is very similar to the fossil crustaceans mentioned above, and has characteristics close to the most primitive ancestral form, so a new subclass, the Pectiniidae, was created within the Crustacea class. … *Some of the terminology that mentions "Hutchinsoniella macracantha" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ところが,53年に,北アメリカ大西洋岸,ニューイングランドのロング・アイランド湾の海岸で,底生生物の研究中,水深9~20mの泥底中から採集された小動物に混じって,体長2~3mmのいままでに見たことのない微小な甲殻類があった。研究の結果,新種としてハッチンソニエラ・マクラカンタHutchinsoniella macracanthaと命名,記載された(1955)。この微小甲殻類は,現生甲殻類では,これまでもっとも原始的とされていたホウネンエビ類を含む鰓脚亜綱とも異なり,前記の化石甲殻類によく似ており,もっとも原始的な祖先形に近い特徴をもっているので,甲殻綱中に新たにカシラエビ亜綱が創設された。… ※「Hutchinsoniella macracantha」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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