The phylogenetic tree is from the OrthoMaM v10b database.
The major clades are colored: monotremes (black), marsupials (magenta), xenarthrans (orange), afrotherians (red), laurasiatherians (green), and euarchontoglires (blue).
All mammalian icons are from Wikimedia Commons, clockwise from the platypus:

Ornithorhynchus	|	https://commons.wikimedia.org/wiki/File:Brehms_Tierleben._Allgemeine_kunde_des_Tierreichs_(1911)_(20413855495)_white_background.jpg
Monodelphis domestica	|	https://commons.wikimedia.org/wiki/File:Monodelphis_domestica93-300b.jpg
Macropus robustus	|	https://commons.wikimedia.org/wiki/File:Macropus_hagenbecki_1907.jpg
Phascolarctos cinereus	|	https://commons.wikimedia.org/wiki/File:Koala_at_Birdland_Animal_Park.JPG
Dasypus novemcinctus	|	https://commons.wikimedia.org/wiki/File:Dasypus_novemcinctus_-_MUSE.jpg
Choloepus didactylus	|	https://commons.wikimedia.org/wiki/File:Choloepus_didactylus_-_MUSE.JPG
Trichechus manatus	|	https://commons.wikimedia.org/wiki/File:Underwater_photography_on_endangered_mammal_manatee.jpg
Loxodonta africana	|	https://commons.wikimedia.org/wiki/File:Elephant_white_background.png
Elephantulus rupestris	|	https://commons.wikimedia.org/wiki/File:Elephantulus_rupestris_Smith_1839.tif
Erinaceus europaeus	|	https://commons.wikimedia.org/wiki/File:Erinaceus_europaeus_h%C3%A9risson_Cuvier_Lasteyrie_BNF_Gallica.jpg
Sorex araneus	|	https://commons.wikimedia.org/wiki/File:Faune_des_vert%C3%A9br%C3%A9s_de_la_Suisse_(Pl._V)_(7979672109).jpg
Diceros bicornis	|	https://commons.wikimedia.org/wiki/File:Rhino_white_background.jpg
Equus caballus	|	https://commons.wikimedia.org/wiki/File:TvN_Anglo-Araber.JPG
Rhinolophus ferrumequinum	|	https://commons.wikimedia.org/wiki/File:British_mammals_(Pl._1)_BHL48418555.jpg
Myotis bechsteinii	|	https://commons.wikimedia.org/wiki/File:British_mammals_(Pl._6)_BHL48418496.jpg
Manis crassicaudata	|	https://commons.wikimedia.org/wiki/File:FMIB_46859_Pangolin_a_grosse_queue_white_background.jpeg
Felis catus	|	https://commons.wikimedia.org/wiki/File:Anatomie_descriptive_et_comparative_du_chat_(1845)_Pl-I_(white_background_%26_colourised).jpg
Canis lupus	|	https://commons.wikimedia.org/wiki/File:Yakutian_laika_(white_background).jpg
Ailuropoda melanoleuca	|	https://commons.wikimedia.org/wiki/File:Pandas!!_(GIANT_PANDA-WOLONG-SICHUAN-CHINA)_(2151393048).jpg
Odobenus spe	|	https://commons.wikimedia.org/wiki/File:Walrus_animal_male_detailed_photo_white_background.jpg
Camelus bactrianus	|	https://commons.wikimedia.org/wiki/File:Camel_seitlich_trabend.jpg
Sus scrofa	|	https://commons.wikimedia.org/wiki/File:Recherches_pour_servir_%C3%A0_l%27histoire_naturelle_des_mammif%C3%A8res_(Pl._80)_(white_background).jpg
Balaenoptera acutorostrata	|	https://commons.wikimedia.org/wiki/File:Balaenoptera_acutorostrata_NOAA.jpg
Physeter macrocephalus	|	https://commons.wikimedia.org/wiki/File:EB1911_Sperm-Whale.jpg
Tursiops spe	|	https://commons.wikimedia.org/wiki/File:Parc_Asterix_20.jpg
Odocoileus virginianus	|	https://commons.wikimedia.org/wiki/File:The_deer_of_all_lands_(1898)_Virginia_deer_white_background.png
Capra hircus	|	https://commons.wikimedia.org/wiki/File:Castellet_-_Ch%C3%A8vre.jpg
Bos taurus	|	https://commons.wikimedia.org/wiki/File:Bos_taurus.003_-_San_Emiliano_(Leon).jpg
Tupaia tana	|	https://commons.wikimedia.org/wiki/File:Tupaia_tana_J_Smit.jpg
Oryctolagus cuniculus	|	https://commons.wikimedia.org/wiki/File:Oryctolagus_cuniculus_(AM_LM817).jpg
Ictidomys mexicanus	|	https://commons.wikimedia.org/wiki/File:Mexican_ground_squirrel_ictidomys_mexicanus.jpg
Heterocephalus glaber	|	https://commons.wikimedia.org/wiki/File:Naked-Mole-Rat_extracted-on-white-background.jpg
Octodon degus	|	https://commons.wikimedia.org/wiki/File:Octodon_cumingii_TZSL_white_background.jpg
Castor	|	https://commons.wikimedia.org/wiki/File:Die_Gartenlaube_(1858)_b_068_white_background.jpg
Jaculus jaculus	|	https://commons.wikimedia.org/wiki/File:Jaculus_jaculus_-_Leonardo_Hidalgo_Insuasti.jpg
Cricetulus vulgaris	|	https://commons.wikimedia.org/wiki/File:FMIB_46816_Hamster_ordinaire_white_background.jpeg
Microtus arvalis	|	https://commons.wikimedia.org/wiki/File:Microtus_arvalis_lenghts.JPG
Rattus norvegicus	|	https://commons.wikimedia.org/wiki/File:Rattus_norvegicus_(white_background).png
Mus musculus	|	https://commons.wikimedia.org/wiki/File:%D0%9C%D1%8B%D1%88%D1%8C_2_(cropped).jpg
Cynocephalus volans	|	https://commons.wikimedia.org/wiki/File:Cynocephalus_volans_Brehm1883_(white_background).jpg
Otolemur garnetti	|	https://commons.wikimedia.org/wiki/File:GalagoGarnettiiWolf.jpg
Carlito (Tarsius) spe	|	https://commons.wikimedia.org/wiki/File:S%C3%A4ugethiere_vom_Celebes-_und_Philippinen-Archipel_(Taf._III)_(white_background)_(1).jpg
Saimiri boliviensis	|	https://commons.wikimedia.org/wiki/File:Saimiri_boliviensis_1847.jpg
Hylobates lar	|	https://commons.wikimedia.org/wiki/File:Hylobates_variegatus_-_1868_-_Print_-_Iconographia_Zoologica_-_Special_Collections_University_of_Amsterdam_-_UBA01_IZ19800109.tif
Pongo	|	https://commons.wikimedia.org/wiki/File:OranUtan.jpg
Gorilla gorilla	|	https://commons.wikimedia.org/wiki/File:Gorila_de_llanura_occidental._Gorilla_gorilla_-_Blanca_Mart%C3%AD_de_Ahumada_(white_background).jpg
Homo sapiens	|	https://commons.wikimedia.org/wiki/File:Ernst_Wenck_-_Trinkendes_Mädchen.jpg
Pan troglodytes	|	https://commons.wikimedia.org/wiki/File:PanTroglodytesSmit_(white_background).jpg
Colobus	|	https://commons.wikimedia.org/wiki/File:Handbook_to_the_Primates_Plate_34.jpg
Chlorocebus sabaeus	|	https://commons.wikimedia.org/wiki/File:Green_monkey_(Chlorocebus_sabaeus)_male.jpg
Papio papio (ex Cynocephalus sphinx)	|	https://commons.wikimedia.org/wiki/File:Cynocephalus_sphinx_-_1829-1867_-_Print_-_Iconographia_Zoologica_-_Special_Collections_University_of_Amsterdam_-_(white_background).tif
Mandrillus sphinx	|	https://commons.wikimedia.org/wiki/File:Mandrillus_white_background.jpg
Macaca mulatta	|	https://commons.wikimedia.org/wiki/File:Macaca_mulatta_(22886604281).jpg
Own work
This picture is a work by the OrthoMaM team at the "Institute of Evolutionary Sciences of Montpellier (ISEM)" and at the "University of Montpellier".
Please credit this picture with one of these references.

Original paper - OrthoMaM: A database of orthologous genomic markers for placental mammal phylogenetics. Ranwez V., Delsuc F., Ranwez S., Belkhir K., Tilak M. &amp; Douzery E. J. P. BMC Evolutionary Biology, 2007, 7 : 241.
Database update - OrthoMaM v8: a database of orthologous exons and coding sequences for comparative genomics in mammals. Douzery E. J. P., Scornavacca C., Romiguier J., Belkhir K., Galtier N., Delsuc F. &amp; Ranwez V. Molecular Biology and Evolution, 2014, 31 : 1923-1928.
A major update - OrthoMaM v10: Scaling-up orthologous coding sequence and exon alignments with more than one hundred mammalian genomes. Scornavacca C., Belkhir K., Lopez J., Dernat R., Delsuc F., Douzery E. J. P., &amp; Ranwez V. Molecular Biology and Evolution, 2019, 36 : 861–862.If you use this work, please email us (account needed) or leave us a short message on this discussion page. It would be greatly appreciated!
Do not copy this picture illegally by ignoring the terms of the license below, as it is not in the public domain.