Parietobalaena is an extinct genus of baleen whale, belonging to the family Pelocetidae.

Fossils are found in Miocene-aged marine strata in North America, Europe, Australia, and Japan, including the Temblor and Itahashi formations.

[1][2][3][4][5] Based on previous estimates of juvenile specimens, Tsai (2017) suggested a body size of 12-15 m for P. yamaokai, akin to that of the gray whale.

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