lepospondyl
/ˌlepəʊˈspɒndɪl/noun
1- an early fossil amphibian of the Carboniferous and Permian periods, distinguished by vertebrae shaped liked hourglasses壳椎亚纲动物（石炭纪和二叠纪早期两栖动物化石, 特征为沙漏形椎骨）。
1.1
- Microsauria and related orders, formerly placed in the subclass Lepospondyli.鳞鲵目及其他相关目, 原归在壳椎亚纲下。
词源
1930s: from modern Latin Lepospondyli (plural)， from Greek lepos 'husk' + spondulos 'vertebra'.