首先，许多至今或者的物种如某些狐猴，一些啮齿类动物以及一种鼯鼠消化器官中仍存在附着于盲肠的阑尾。
First , several living species , including certain lemurs , several rodents and a type of flying squirrel , still have an appendix attached to a large cecum which is used in digestion .
狐猴类