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The Geirud Formation consists mainly of clastic sediments which are interbedded with limestone stringers. This rock unit is well-exposed along the Central Alborz Range in northern Iran. The Geirud Formation rests unconformably on the Mila Formation (Upper Cambrian) and is conformably overlain by the Mobarak Formation (Lower Carboniferous). This study was undertaken to determine the geologi...

F. G o n z á l e z e t a l . G e o l o g i c a A c t a , 1 3 ( 4 ) , 3 4 5 3 6 1 ( 2 0 1 5 ) D O I : 1 0 . 1 3 4 4 / G e o l o g i c a A c t a 2 0 1 5 . 1 3 . 4 . 7 Upper Frasnian palynomorphs from the Catalan Coastal Chain 346 defined as Les Vilelles unit in the Priorat Massif (Sáez, 1982), is confusing. On the basis of the palynological content of two closely collected shale samples, Colodrón...

Abstract The Hagen-Balve Reef Complex of the northern Rhenish Massif, Germany, is one best examples for globally widespread Givetian to Frasnian reefs. At its eastern end, in Hönne Valley, it reaches up 1000 metres thickness. In general, there limited knowledge concerning faunas and palaeoecology initial reef phases. A unique section at Binolen exposes sharp boundary between underlying, silicic...

In their analysis of humeral evolution in early tetrapods (taken here as meaning vertebrates with limbs), Shubin et al. (1) described a suite of derived characters that represents a significant advance on previous analyses (2– 4). This makes their negative assessment of GSM 104536, the humerus provisionally attributed to Elginerpeton pancheni (2, 4, 6), all the more surprising. The specimen (se...