FIG. 4. — A in Historical background

FIG. 4. — A, Portrait of Franz Toula (after Rosiwal 1920); B, ErenkÖy section as it was logged by Toula in 1895. Toula (1899) described the stratigraphy as follows: 1, horizontal sandstone beds with Cardium and vertebrate fossils; 2, marl with scarce plant remains; 3, hard layers protruding between the friable marl; 4, sandy layers; 5, limestone roof.