摘要
关刀剖面可初步划分15个牙形石带和动物群,自下而上为:Hindeodus parvus- H. anterodentatus组合带,Neospathodus dieneri延限带,Ns. pakistanensis间隔带( ?) ,Ns. waageni- Parachirognathus动物群,Ns.crassatus延限带,Ns.symmetricus- Ns .homeri间隔带,Chiosellati morensis延限带,Nicoraella germanicus- Nic .kockeli间隔带,Paragondolella bulgarica延限带,Neogondolella constricta间隔带,Ng. constricta cornuda间隔带,Budurovignathus truempyi延限带,Bv. hungaricus间隔带,Bv. mungoensis间隔带,Metapolygnathus polyg-nathiformis动物群。根据牙形石对比划分了阶。安尼阶(或青岩阶)底界年龄可能为247 Ma。
A refined conodont succession from Griesbachian to basal Carnian is presented for the Guandao section in southern Guizhou of China. The succession includes, in ascending order, 15 conodonl zones/faunas; Hindeous parvus-H. anterodentatus Assemblage-Zone,Neospathodus dieneri Range-Zone.Ns.pakistanensis Interval -Zone （？）, Ns. waageni-Parachirognathus fauna, Ns, crassatus Range-Zone, Ns. symmetricus-Ns. homeri Interval-Zone, Chiosella timorensis Range-Zone, Nicoraella germanicus-Nic. kockeli Interval-Zone, Paragondolella bulgarica. Range-Zone, Neogondolella constricta Interval-Zone, Ng. constricta cornuda Interval-Zone, Budurovignathus truempyi Rnnge-Zone, Bv. mungoensis Interval-Zone and Metapolygnathus polygnathiformis fauna.
出处
《古生物学报》
CAS
CSCD
北大核心
2005年第4期611-626,共16页
Acta Palaeontologica Sinica
基金
全国地层委员会"中国主要断代地层建阶研究"项目
国家自然科学基金(No .40173005)资助课题。
