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对采自广西果乐寒武系芙蓉统果乐组的新棘皮动物门海桩纲角首类化石进行了研究,建立新种一个:靖西叶果Phyllocystis jingxiensis sp.nov..新种特征:个体较小,萼心形,窄而厚的十块边缘板组成封闭的萼框,边缘板没有明显的瘤或刺;上中板和下中板均呈多角形,但上中板略大;轭棒后端肥厚,后半段与M4,M5连接处相接;口缘板三块;桩腕始部约分10节,其上位面盖板基本水平,下位面盖板向两侧倾斜;桩锥锥形;桩腕末端较长,其上见清晰步带沟;靴孔及肛锥模糊显现于萼部上位面右前角及底端.
The fossils of the first echinoderms of the echinoderm, collected from the Furongguoyue music group of the Cambrian Department of Guangxi Province, were studied to establish a new species: Phyllocystis jingxiensis sp.nov .. Characteristics of New Species: Individual smaller, calyx heart-shaped, narrow and thick ten edge panels composed of closed calyx box, edge plate no obvious tumor or thorns; upper plate and the lower plate were polygonal, but the slightly larger plate; The back end of the yoke rod is hypertrophy, and the latter half is connected with the connection point of M4 and M5; the edge plate is three pieces; the beginning of the pile wrist is about 10 knots, the upper surface cover plate is basically horizontal and the lower surface cover plate is inclined to both sides; Pile tapered cone; pile ends longer, see the clear step belt groove; boots hole and anal cone blurred appear in the upper eyelid right anterior horn and the bottom.