EUTHERIA Mesozoic Mammals: 'basal' Eutheria (January 2002) Mesozoic Mammals: Basal Eutheria Two (March 2002) Mesozoic Mammals: 'basal ungulates' (June 2002) Mesozoic Mammals: Zalambdalestidae, Lipotyphla?, Cimolestidae and Cretaceous Taeniodonta (June 2002) Eutheria is slightly wider taxon than placentalia. These are mammals whose babies develop with the help of a placenta. Welcome to the family. PLEASE NOTE: THIS PROJECT IS NOT SCIENTIFIC. IT IS A HOBBY. "I was looking for information on an old mammal and found this lot. What is this project?" It's got lots of information on old mammals. For a short bit of background information, see here.