ammonoid

1. New progress in the study on Permian AMMONOID biostratigraphy in Guangxi
   广西二叠纪菊石生物地层学研究新进展
2. Discovery of a Devonian AMMONOID species from Ejin Banner of Western Inner Mongolia
   内蒙古额济纳旗发现的一种泥盆纪菊石
3. Late Early Carboniferous corals in AMMONOID facies from Altay of Northern Xinjiang
   新疆阿勒泰地区早石炭世晚期菊石相四射珊瑚
4. Early Carboniferous corals in the AMMONOID facies from barkol, Xinjiang
   新疆巴里坤早石炭世菊石相的珊瑚

noun

1. one of the coiled chambered fossil shells of extinct mollusks

   Synonym:    ammonite