摘要
瓣甲鱼类在我国泥盆系中分布较广,具有相当重要的生物地层学意义。根据化石在地层中的分布,我国的辦甲鱼类自上而下可分为5个组合(带):拟辦鱼一广西辦甲鱼(Quasipetalichthys-Guangsipetalichthys)组合,宽头鱼(Eurycaraspis)带,中华瓣甲鱼-西南瓣甲鱼(Sinipetalichthys-Xinanpetalichthys)组合,新瓣鱼(Neopetalichthys)带,滇东瓣甲鱼(Diandongpetalichthys)带。它们的时代分别相当于吉维期,吉维期早期,布拉格期,布拉格期早期和洛赫科夫期早期。
The Devonian petalichthyids were widely discovered from South China and Northwestern China.Five petalichthyid assemblages(Zones)descendingly are identified here:Quasipetalichthys-Guangsipetalichthys Assemblage,Eurycarapis Zone, Sinopetalichthys-Xinanpetalichtys Assemblage,Neopetalichthys Zone and Diandongpetal- ichthys Zone.The geological ages are regarded as Givetian,early Givetian,Pragian,early Pragian and early Lochkovian respectively.Petalichthyids may originate from Late Sil- urian arthrodires in South China.South China is one of the evolutionary centres and one of the important biogeographical provinces of petalichthyids.
出处
《地层学杂志》
CSCD
北大核心
1996年第3期161-164,共4页
Journal of Stratigraphy
