Figure 11.

Phylogenetic tree resulting from the fourth analysis, excluding Frisiphoca aberratum, Frisiphoca affine and Monotherium? wymani. 50% majority consensus tree of the six most parsimonious trees. The age ranges for extinct OTUs are expressed as a green bar over each relevant terminal branch. Bootstrap values exceeding 50% are indicated on the relevant branches. Geochronological ages for the included species, whenever fossil or subfossil specimens have been documented: Acrophoca longirostris [42], Allodesmus kernensis [76] Enaliarctos mealsi [52], Devinophoca claytoni [30], Erignathus barbatus [77,78], Hadrokirus martini [8], Halichoerus grypus [79], Homiphoca capensis [80], Hydrurga leptonyx [18,81], Kawas benegasorum [82], Leptophoca proxima [10], Mirounga leonina [83], Monachus monachus [84], Nanophoca vitulinoides [9], Noriphoca gaudini (this study), Ommatophoca rossii [81], Otaria byronia [85], Phoca vitulina [79], Piscophoca pacifica [8], Pliophoca etrusca [6], Pteronarctos goedertae [54] and Thalassoleon mexicanus [55]. Extinct taxa are indicated by a dagger. Noriphoca gaudini indicated in bold.