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P. 192 (from p.188) not an impression, but a silicified leaf, dicotyledonous. The same beds contain rare bones apparently all reptilian (no trace of deities dinosaurs however), turtles and crocodiles. In a clay lens intercolated in these beds was found most of the skeleton of a crocodile (#334), lacking head (weathered out and lost) and tail (lost before burial). In this baranca the Banco Verde thus grades from south to north from a definitely marine bed into definitely terrestrial deposits, beach or deltaic, with much jetsom. BANCO NEGRO ? At FB the Banco Negro is fairly typical, black to grey clay grading into the tuffs above & with lenses of sand & concretions. No fossils were found. The contact with the Banco Verde, where this is marine, is sharp and discordant. At FA the Banco Negro is hardly recognizable, except from its position. It consists of grey clay and fine sand & is apparently conformable on the Banco Verde equivalent, here likewise non-marine. (See)(P.194)