CAJ | 학술논문

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Paroistodus 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.
본문묘술료산자화남귀주하오도통홍화완조(동재홍화완표준부면,연하감계부면화귀양황화충부면)적사개렴전류아형자충:Drepanoistodus sp.cf.nowlani,Paltodus sp.cf.P.subaequalis,Paltodus sp.A화Paroistodus sp..D.sp.cf.nowlani위홍화완조상견충,단령삼충칙상대희소.재홍화완조표준부면,Paltodus sp.cf.P.subaequalis최저출현우해조저부,증실차층위위만특마두극기.문중상세도시료산우서전하오도통적량개대화석충:Paltodus deltifer화Paroistodus proteus,이급서전렴전자속적삼개상견충:Drepanoistodus forceps,D.basiovalis화D.sp.cf.D.suberectus.통과여서전재료적상세대비,아문인위화남이전관우P.proteus화P.deltifer량충적기술다유오,수중신전정.
Four drepanoistodontid species, Drepanoistodus sp. cf. D. nowlani, Paltodus sp. cf. P. subaequalis, Paltodus sp. A and Paroistodus sp. are described and illustrated form the Lower Ordovician Honghuayuan Formation in Guizhou, South China. Drepanoistodus sp. cf. D. nowlani is abundant throughout the formation whereas the other three species occur rarely. Presence of Paltodus sp. cf. P. subaequalis at the base of the Honghuayuan Formation at its type locality indicates a late Tremadocian age for this level. Specimens from Sweden of the two Lower Ordovician index species Paltodus deltifer and Paroistodus proteus, as well as three species of Drepanoistodus (D. forceps, D. basiovalis and D. sp. cf. D. suberectus),are also illustrated. Comparison with the Swedish material reveals that previously reported occurrences of P. deltifer and P. proteus in South China were either mis-identified or based on ambiguous data.