| 词条 | Toxopneustidae |
| 释义 |
| name = Toxopneustidae | image = Collector urchin.jpg | image_caption = Tripneustes gratilla | regnum = Animalia | phylum = Echinodermata | classis = Echinoidea | superordo = Echinacea | ordo = Camarodonta | familia = Toxopneustidae | familia_authority = Troschel, 1872 [1] | subdivision_ranks = Genera | subdivision = }} Toxopneustidae is a family of globular sea urchins in the class Echinoidea. CharacteristicsAll Camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the Toxopneustids are characterised by the peristome, or opening through the test, having a sharp margin with the buccal notches being prominent. The tubercles lack the crenulations or ring of cog-like structures that articulate with the spines in certain other families. The Aristotle's lantern, or jaw apparatus, has the keeled teeth and the epiphyses united above the foramen magnum, the V-shaped gap between the hemipyramids that support the lantern's tooth.[2] Genera
See also
References1. ^1 Toxopneustidae World Register of Marine Species. Retrieved 2011-08-27. {{Taxonbar|from=Q3200924}}2. ^The Echinoid Directory The Natural History Museum. Retrieved 2011-08-27. 1 : Toxopneustidae |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。