noun
Obsolete taxonomic term for arachnids. Replaced by modern terms such as 蛛形類 (ちゅけいるい) or クモ綱. The cross-reference to 蛛形類 suggests this is a historical synonym.
See also: 蛛形類
「無角類」は、かつてクモやサソリなどを含む分類群を指した古い用語である。
"Mukakurui" is an old term that once referred to a taxonomic group including spiders and scorpions.