| image = Adelobasileus BW.jpg | image_caption = Adelobasileus | image_width = 250px | regnum = Animalia | phylum = Chordata | subphylum = Vertebrata | unranked_classis = Amniota | classis = Synapsida | unranked_familia = Mammaliaformes | unranked_familia_authority = Rowe, 1988 | subdivision_ranks = Clades | subdivision = See text }} Mammaliaformes ("mammal-shaped")'s a clade that contains the mammals and their closest extinct relatives. Phylogenetically it's defined as a clade including the mo… (More on Mammaliaformes)