【摘要】 本文描述了产自贵州紫云新苑早三叠世末期的菊石17属27种,其中包括4新属,17新种。4新属是Ziyunites,Eodanubites,Eoacrochordiceras 和Preflorianitoides,以Ziyunites 为最常见。13旧属中,9属是标准早三叠世晚期的类型,以Procarnites 和Albanites 两属最为常见。并指出了Japonites,Procladiscites 和Hungarites 三属的地质历程应自早三叠世晚期延至中三叠世。更多还原

【Abstract】 The ammonoids described in this paper were collected in 1963 by the writer froma bed of limestone(0.1—0.2 m)at the uppermost part of Lower Triassic in Xinyuanof Ziyun,Guizhou province.更多还原