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In this work we present an analysis of anthropogenic traces left by consumption on archaeological animal bones, recovered from trash middens on historical sites at Rosario city (Santa Fe, Argentina). The aforementioned sites are: Juan Manuel de Rosas, Casa Parroquial, Arenales, and La Basurita. Each of them was dated between the 18th and 19th centuries. These sites belong to different sections of Rosario. Casa Parroquial, Juan Manuel de Rosas, and La Basurita belongs to the Historic Centre, the foundational area and its surroundings. Meanwhile, Arenales site is placed in an area that in the period under study was considered part of Rosario´s suburbs, where the Refinería, a working class neighborhood, was created during late 1890s. We recorded sawing marks, and bone fractures caused by the impact of tools like axes and hatchets. Another kind of trace observed were cut-marks, left by knives on different places of bones. From the analysis of these marks we could infer different stages of carcass processing: primary and secondary butchering, meat removal and consumption. Identification of anthropogenic traces on faunal remains in historical sites is a relevant issue. This kind of marks exhibit peculiar characteristics due to the tools and practices that produced them, which are different of those produced by stone tools (better known from actualistic studies). Processing stages are different too for historical urban settings, where animal units are acquired from a market system. First, cuts could be selected by their market price over their nutritional value. Thus, this paper aims mainly to be a contribution to the recognition of processing marks at urban sites, and to offer an overview of the first inferences about the consumption of diverse taxa found at historical sites from Rosario