门: 多孔动物门
纲: 普通海绵纲
目：单轴海绵目
科: 斗篷海绵科
属：斗篷海绵属
种: 小滥田斗篷海绵
描述:
这是澄江生物群中比较常见的海绵。它通常以小的、形状迷人的印痕化石出现。海绵体外形呈现矮锥斗篷状，个体较小，成体的盘体直径约为2cm左右。盘体由辐射状排列的单轴针组成，骨针有粗细两种，细小骨针为盘体的主体，较粗的骨针向盘外呈辐射状延伸，且在盘外延伸长度不一，有些骨针延伸长度比盘体直径还要长。
Phylum: Porifera Grant,1836
Class: Demospongea Sollas,1875
Order: Monaxonida Sollas,1883
Family: Choiidae Delaubenfels,1955
Genus: Choia Walcott,1920
Specie: Choia xiaolantianensis Hou, Berdstrom, Wang, Feng&Chen, 1999
Description: It typically occurs as small, attractively shaped impression fossils.The body has a low, conical‐shaped central disk up to 2 cm in diameter, composed of short, thin monaxon (single axis) spicules that combine to give a thatch‐like appearance. Radiating from the disk there is a plethora of slender and discrete monaxon spicules, some of which are longer than the diameter of the disk itself.
年龄：寒武纪第二世第三阶
主要产地: 澄江生物群（云南澄江）
Age:Cambrian Series2,Stage3
Principal localities: Chengjiang biota (Yu’anshan Member of the Chiungchussu Formation),eastern Yunan Province,China
Hou X G, David J S, Derek J S, et al. 2017. The Cambrian Fossils of Chengjiang, China. The flowering of early animal life, Second Edition [M]. Wiley Blackwell: 1-316.