Clade Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758 Clade Trechnotheria McKenna 1975 Clade Alethinotheria Averianov, Martin & Lopatin 2013 Clade †Meridiolestida Rougier, Apesteguía & Gaetano 2011 see Order Meridiolestida Rougier, Apesteguía & Gaetano, 2011 Genus †Necrolestes Ameghino, 1891 1 †Necrolestes patagonensis Ameghino, 1891