Class Mammalia Linnaeus, 1758 - mammals Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001 Genus †Potamotelses Fox, 1972, incertae sedis [monotypic] †Potamotelses aquilensis Fox, 1972