Paleosol (organic matter and pedogenic carbonates) and paleontological δ13C records applied to the paleoecology of late Pleistocene-Holocene in Mexico

The δ13C values of paleosols and analysis of megafauna in Northwest and Central-Northern Mexico matched each other, indicating mixed C3-C4 vegetation; while for Central-Southern Mexico, paleosols indicated predominance of C3 plants and megafauna indicated mixed C3-C4 composition. In general, the results indicate that in northern Mexico environmental conditions were slightly wetter than at present, while for the central area there was a large change in the environmental conditions of high humidity in MIS3 and MIS2, with a trend to drier climates in MIS1.