鲁中地区早奥陶世早期的头足类

CEPHALOPODS IN THE EARLY LOWER ORDOVICIAN FROM CENTRAL SHANDONG

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。

Abstract:

The cephalopods described in the present paper were collected from Zibo and Juxian of central shandong, totalling 11 genera and 15 species with 3 new genera and 6 new species, namely Dakeoceras corniculum Ulrich et Flower, D. circulere Zou, Barnesoceras expansum Flower, B. lentiexpansum Foerste, Clarkoceras ruedenni Flower, Eoclarkoceras exogastrum sp. nov., Ectenolites penecilin Flower, E. scutatus sp.nov., Cumberloceras buttsi UF. et M., C. canaliculata sp. nov., Pseudoeburoceras dongyuense gen. et sp. no...