FIG. 1 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna

FIG. 1. — Geographic and geological setting. A, Location of the main outcrops of the Chilcatay Formation along the southern coast of Peru. B, Simplified map providing the position of Ullujaya (the type locality of Diaphorocetus ortegai n. sp.) alongside other highly fossiliferous sites of the Ica desert (including Zamaca, the type locality of Rhaphicetus valenciae Lambert, Muizon, Urbina & Bianucci, 2020). C, Schematic stratigraphic column of the Cenozoic succession exposed in the East Pisco Basin. D, Simplified stratigraphic section of the Chilcatay Formation in Ullujaya, showing the exact position of the holotype of D. ortegai n. sp. in the Ct1 allomember, Ct1a facies association. E, Simplified stratigraphic section of the Chilcatay Formation in Zamaca, showing the exact position of the holotype of R. valenciae in the Ct1 allomember, Ct1a facies association. Both sections D and E include positions of ash layers dated with 40Ar/39Ar and shell-rich beds dated with 87Sr/86Sr along with the corresponding age estimates (after Bosio et al. 2022). Maps and sections modified from Bianucci et al. (2018b), Di Celma et al. (2018, 2019), Bosio et al. (2020, 2022), and Lambert et al. (2020).