摘要
文中记述了淄博市淄川区峨庄镇东峪东村和莒县洛河镇小汇泉地区下奥陶统纸坊庄组纸一段的头足类化石11属、15种,其中新属3个、新种6个和两个未定种,属于两个目、3个科,并据此建立了Barnesoceras—Dakeoceras带。此头足类动物群先后在美国加拿大统加斯科纳(Gasconadian)组,我国河北涞水和内蒙古清水河等地下奥陶统冶里组有报道,应视为同时期产物。
The cephalopoda fossils described in this paper were collected from the first member of the Zhifangzhuang Formation of Ezhuang, Zibo city and Xiaohuiquan of Juxianconnty, Shangdong Province. The discovery of Barnesoceras, Dakeoceras, Clarkoceras, etc. in the middle and upper parts of the first member of the Zhifangzhuang Formation is of great geologic significance becanse they are index fossils for the base of the Gasconadian Formation (Lower member of the Canadian )in North America. The age of Barnesoceras and Dakeoceras was determined as Tremadocian, equivalent to the Yehli Formation(Lower Series of the Ordovician System) in North China.
出处
《山东地质》
1989年第1期15-27,109-111,共13页
Geology of Shandong
