Coelomata

体腔动物门

1. 真体腔动物：Kinorhyncha - 动吻动物门 | Coelomata - 真体腔动物 | Gastrotricha - 腹毛动物门

1. Reservoir of paleo-oil is mainly bioherm limestone. Bitumen mainly occurs in cavities and fractures, and also in matrix pores and biological coelomata.
    古油藏的储集层均为生物礁滩灰岩，沥青的主要储集空间以洞、缝为主，其次为基质孔隙和生物体腔内。