Cynodont           225mya
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Rhinoceroses
47
Tapirs
56
HORSES
//
65
Mongooses
25
Lion and tigers
40
Bears
20
Seals
Cattle
//
50
Whales
Pigs
//
35
Peccaries
Figure 1:  Phylogenetic tree of recent mammals.
Divergence splits are shown in millions of years ago.
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