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本文描述了产自华南贵州下奥陶统红花园组(桐梓红花园标准剖面,沿河甘溪剖面和贵阳黄花冲剖面)的四个镰箭类牙形刺种:Drepanoistodus sp.cf.nowlani,Paltodus sp.cf.P.subaequalis,Paltodus sp.A和Paroisto-dus sp.。D.sp.cf.nowlani为红花园组常见种,但另三种则相对稀少。在红花园组标准剖面,Paltodus sp.cf.P.subaequalis最低出现于该组底部,证实此层位为晚特马豆克期。文中详细图示了产于瑞典下奥陶统的两个带化石种:Paltodus deltifer和Paroistodus proteus,以及瑞典镰箭刺属的三个常见种:Drepanoistodus forceps,D.basiovalis和D.sp.cf.D.suberectus。通过与瑞典材料的详细对比,我们认为华南以前关于P.proteus和P.deltifer两种的记述多有误,须重新厘定。
In this paper, four species of Sarcandrata species from the Lower Ordovician Honghuayuan Formation (Tongzihonghua Garden Standard Profile, Ganhe Profile along the River and Huanghuazhong Profile in Guiyang) of Guizhou Province are described: Drepanoistodus sp.cf.nowlani, Paltodus sp .cf.P.subaequalis, Paltodus sp. A and Paroisto-dus sp. D.sp.cf.nowlani is a common species of the red garden group, but the other three are relatively rare. At the standard section of the Honghuayuan Formation, the lowest occurrence of Paltodus sp.cf.P.subaequalis occurred at the bottom of this group, confirming that this horizon is Late Temastic. Two fossilized species of fossils, Paltodus deltifer and Paroistodus proteus, which are produced in the Lower Ordovician, Sweden, are illustrated in detail, as well as three common species of the Swedish Scurvae: Drepanoistodus forceps, D. basiovalis and D.sp.cf. D.suberectus. Through detailed comparisons with the Swedish materials, we think the previous statements about the two species of P. proteus and P. deltifer in South China have been wrong and need to be restated.