VARIACIONES DE UN METODO QUIMICO DE LIMPIEZA PARA LA PREPARACION DE VERTEBRADOS FOSILES

Fernando Abdala, Margarita Hidalgo

Abstract


The specific action of complex agents in the dissolution of iron matrix is underlined in this work. Fossil fragments from Puesto Viejo Formation (Scitian) were treated at different concentrations of thioglycolic acid (TGA), Mohr salt and pH. It was noted that at: TGA = 5 %; Fe (II) = 0.3 % and pl-I 3,90 the matrix dissolution was best. Finally the chemical cleaning method used on the skull of the carnivorous cynodont Cynognathus minor Bonaparte is described. As a result, structural details not described until now were observed.

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