noun 下载 🔗分享 合弓纲基干类群, 盘龙目 (historically used, though outdated) Any of a group of basal or primitive Late Paleozoic synapsid amniotes, part of a polyphyletic grade, formerly regarded as order Pelycosauria. Examples : "While not technically dinosaurs, the sail-backed Dimetrodon is a well-known example of a pelycosaur. " 虽然严格来说,帆背龙(Dimetrodon) 并不是恐龙,但它是合弓纲基干类群(过去常被称为“盘龙目”)一个广为人知的例子。 biology animal organism science history 与AI对话词汇游戏阅读练习