| | Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal (Site not responding. Last check: 2007-10-08) |
 | | The precise phylogeny is disputed due to the scantness of evidence in the fossil record. |
 | | However, it is thought that the Mammaliaformes were of three major groups: Allotheria, the longest extinct lineage of pre-mammals; Docodonta, including close relatives such as Morganucodonta; and Symmetrodonta, the most basal of modern mammals. |
 | | Only one group of cynodonts gave rise to mammaliaformes, and it may be the Probainognathia family, but the branch Allotheria was so different that they may have came from an entirely different group of cynodonts. |
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