南天山西部泥盆纪Zdimir腕足动物群的发现

新疆乌恰县西部斯木哈纳边境口岸北侧边境线附近含Zdimir腕足动物群的中厚层灰黑色生物碎屑灰岩一直被视为中泥盆统托格买提组。作为一个岩石地层单位,托格买提组的含义应该是分布在托格买提东一带及阿赖山东部以片岩、千枚岩、石英砂岩或以厚层灰岩为主、含腕足动物Stringocephalus,Bornhardtina和珊瑚Temnophyllum,Neospongophyllum等化石群的地层,主体时代为Givetian期。斯木哈纳边境口岸北侧边境线附近中厚层灰黑色生物碎屑灰岩与托格买提组的岩性差异较大,应另建新组名。对Zdimir动物群详细研究后证实,这套地层的时代大致为早泥盆世晚期(Emsian期)。     

Reassignment of Pentamerus davyi Oehlert to Zdimir robustus (Barrande) (Brachiopoda,Devonian): Stratigraphic and palaeogeographic implications

The brachiopod fauna of the Chalonnes Limestone (Armorican Massif, France) is famous because of the presence of large, thick-shelled species first described by Oehlert (1881). One of these species originally assigned to Pentamerus davyi Oehlert, 1881 is here revised. External as well as internal characters of the shell allow its attribution to Zdimir robustus (Barrande, 1879), a species from the Trebotov Limestone in the Prague area. This reassignment is consistent with an Upper Emsian age for the Chalonnes Limestone.