Robuta

https://www.academia.edu/11512315/Heterogeneous_models_place_the_root_of_the_placental_mammal_phylogeny
Feb 3, 2025 - Heterogeneity among life traits in mammals has resulted in considerable phylogenetic conflict, particularly concerning the position of the placental root....
placental mammalpdfheterogeneousmodelsroot
https://www.bas.ac.uk/data/our-data/publication/an-additional-record-of-a-placental-mammal-order-astrapotheria-from/
placental mammaladditionalrecordorderastrapotheria
https://pubmed.ncbi.nlm.nih.gov/19582725/
An unprecedented level of confidence has recently crystallized around a new hypothesis of how living placental mammals share a pattern of common descent. The...
placental mammalnewframeworkunderstandingevolution
https://www.wordnik.com/words/placental%20mammal
placental mammal: mammals having a placenta; all mammals except monotremes and marsupials
placental mammaldefinitionmeaning