Nemertea - Wikipedia
Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of about 1300 known species. [2][3] Most ribbon worms are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. Many have patterns of yellow, orange, red and green coloration.
纽形动物门 - 维基百科，自由的百科全书
纽形动物门 （學名： Nemertea）是 無脊椎動物 的一个 门 [1]，其下的 物種 通稱 紐蟲 （ribbon worms），是一类具 吻 （英语：Proboscis） 的长带形动物，绝大多数为 海洋 底栖 生物，少数為淡水甚至陆生（如 地纽虫）。 纽形动物全部营自由生活而无 寄生 种类。 體長大多不超過二十 釐米，但也存在个例如 巨纵沟纽虫 可以长达55米，是已知最长的 无脊椎动物 之一 [2]。 全世界至少有1200 种。 与 扁形动物 一样，纽形动物也是两侧对称、三 胚层 、无 体腔 的动物，腦部只 …
ADW: Nemertea: INFORMATION
2018年3月20日 · Phylum Nemertea, or ribbon worms, contains approximately 1,200 species of bilaterally symmetrical, coelomate, unsegmented worms, which are divided into two classes, each of which is divided into two orders (Anopla: Palaeonemertea, Heteronemertea and Enopla: Hoplonemertea, Bdellonemertea).
纽形动物 - 百度百科
纽形动物门(Nemertina，Nemertea, 亦称Nemertinea或吻腔动物门〔Rhynchocoela〕)无脊椎动物。 主要营自由生活，但有几种寄生于蟹、虾和海鞘。 已知约900种，大部分海生，少数生活于淡水或陆生。
Ribbon worm | Anatomy, Habitat & Adaptations | Britannica
ribbon worm, any member of the invertebrate phylum Nemertea (sometimes called Nemertinea, or Rhynchocoela), which includes mainly free-living forms but also a few parasites of crustaceans, mollusks, and sea squirts. The majority of the approximately 900 known nemertean species are found in marine habitats.
Nemertea - New World Encyclopedia
Nemertea is a phylum of largely aquatic invertebrate animals also known as ribbon worms or proboscis worms and characterized by long, thin, unsegmented body that is flattened posteriorly and cylindrical anteriorly and has a long retractable proboscis that can evert for such purposes as capturing prey, defense, and locomotion.
纽形动物门 - 百度百科
古纽目(Paleonemertea)：例如管居纽虫。 异纽目(Heteronemertea)：如脑纹纽虫(Cerebratulus)及线纽虫(Lineus)。 有刺纲(Enopla)针纽目(Hoplonemertea)：例如 端纽虫 (Amphiporus)、小体纽虫，陆生纽虫(Geonemertes)等。 蛭纽目(Bdellonemertea)：只有一科一属。 蛭纽虫属(Malacobdella)：有4个种。 纽虫体为长形、圆柱状或背腹扁平呈带状（见图）。 头部不明显，前端常有眼点和其他感觉器官。 内部构造有一些分节性，但外表无分节现象。 体表具纤毛。 口 …
World Nemertea Database - WoRMS - World Register of Marine …
4 天之前 · Species of the phylum Nemertea, or ribbonworms, inhabit all parts of the world's oceans, as well as many freshwater and terrestrial habitats. They are unsegmented worms characterized by a unique and remarkable eversible proboscis used for prey capture and sometimes locomotion.
生物学笔记 · 纽形动物门 - 知乎 - 知乎专栏
Chracteristics of Phylum Nemertea 纽形动物门的特征. An eversible proboscis, unique to nemerteans, lies free in a cavity (rhynchocoel) above the alimentary canal. 纽形动物特有一可翻转的吻，可自由活动于消化道上方的空腔（吻腔）中。 2. In marine, freshwater, …
Global diversity of nemerteans (Nemertea) in freshwater
2007年12月18日 · Most ribborn worms (phylum Nemertea) are marine and only 22 of the currently named around 1,200 species are known from freshwater habitats (mainly lakes/ponds). They are all free-living benthic forms found in all continents except Antarctica.