The Late Mississippian (also known as the Upper Mississippian) is the third and final of three subepochs of the Mississippianepoch of the Carboniferousperiod. It spans the time between 326.4 ± 1.6 Ma and 318.1 ± 1.3 Ma (million years ago). It has one faunal stage, the Serpukhovian. A division of geologic time less than a period and greater than an age. ... This article is about the geologic period; for the North American culture, see Mississippian culture. ... // For other uses, see time scale. ... The Carboniferous is a major division of the geologic timescale that extends from the end of the Devonian period, about 359. ... // For other uses, see time scale. ... Annum is a Latin noun meaning year. ... Faunal stages are a subdivision of geologic time used primarily by paleontologists who study fossils rather than by geologists who study rock formations. ... The Serpukhovian Age is the last of three ages in the Mississippian Epoch of the Carboniferous Period. ...