Editing Mammal (section)

===Origins===
[[Synapsida]], a clade that contains mammals and their extinct relatives, originated during the [[Pennsylvanian (geology)|Pennsylvanian subperiod]] (~323&nbsp;million to ~300&nbsp;million years ago), when they split from the reptile lineage. Crown group mammals evolved from earlier [[Mammaliaformes|mammaliaforms]] during the [[Early Jurassic]]. The cladogram takes Mammalia to be the crown group.<ref name=Liaoconodon2011>{{cite journal | vauthors = Meng J, Wang Y, Li C | title = Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont | journal = Nature | volume = 472 | issue = 7342 | pages = 181–185 | date = April 2011 | pmid = 21490668 | doi = 10.1038/nature09921 | bibcode = 2011Natur.472..181M | s2cid = 4428972 }}</ref>

{{clade
 |label1=[[Mammaliaformes]]
  |1={{clade
            |1=[[Morganucodontidae]] [[File:Morganucodon.jpg|50px]]
            |2={{clade
                 |1=[[Docodonta]] [[File:Docofossor NT flipped.jpg|50px]]
                 |2={{clade
                           |1=''[[Haldanodon]]''
                           |label2='''Mammalia'''
                           |2={{clade
                                |1=[[Australosphenida]] (incl. [[Monotremata]]) [[File:Steropodon BW.jpg|50px]]
                                |2={{clade
                                  |1=''[[Fruitafossor]]''
                                  |2={{clade
                                     |1={{clade
                                         |1=''[[Haramiyavia]]''
                                         |2=[[Multituberculata]] [[File:Sunnyodon.jpg|50px]]
                                   }}
                                     |2=''[[Tinodon]]''
                                     |3=[[Eutriconodonta]] (incl. [[Gobiconodonta]]) [[File:Repenomamus BW.jpg|50px]]
                                     |4=[[Trechnotheria]] (incl. [[Theria]]) [[File:Juramaia NT.jpg|50px]]
                               }}
                         }}
                    }}
               }}
          }}
     }}
}}