摘要
本文描述了采自四川广元上寺下志留统的介形类化石,计有 Crarpedobolbina(Artiocras-pedon)sichuanensis(Zheng),Craspedobolbina?sp.,Aparchites houae sp.nov.,Sichuania theloida gen.et sp.nov.和2个未定属种。通过对该层介形类、笔石、三叶虫等化石以及上覆地层的研究,提出该层应划入罗惹坪组,瘤石介类出现时代为Telychian早期或早于Telychian期。这一研究丰富了我国志留纪介形类资料,并对研究瘤石介类早期发生历史和生态具有一定的意义。
The ostracodes described in this paper were collected from the Lojoping For-mation of the Early Silurian at Shangsi of Guangyuan, Sichuan, consisting of 3genera and 4 species, namely, Craspedobolbina (Artiocraspespedon)sichuanensis(Zheng), Craspedobolbina? sp., Aparchites houae sp. nov., Sichuania theloida gen. etsp. nov. and 2 other taxa (gen. et sp. indet.), in association with the trilobitesGaotania pulchella, G. ovata, Hypaproetus sp., Kosovopeltis sp., Leonaspis sp., Enc-rinuroides sp., the graptolite Pristiograptus sp., the brachiopods Zygospiraella ven-usta, Lingula sp. and crinoids.
出处
《微体古生物学报》
CSCD
北大核心
1990年第2期161-168,210-211,共8页
Acta Micropalaeontologica Sinica
