英和和英

出典:『Wikipedia』 (2011/03/31 18:03 UTC 版)

英語による解説

引用

The Aglaspida, more correctly termed Aglaspidida, were a group of small, horseshoe crab-like arthropods that were once regarded as basal or ancestral horseshoe crabs. However they cannot be accommodated within the chelicerates. Now, though, they are regarded as a distinct group, possibly being close to the trilobites. The older idea that they link trilobites with Chelicerata has fallen out of favour.