Mario Urbina

TL;DR: It is proposed that Leviathan fed mostly on high-energy content medium-size baleen whales, together with the contemporaneous giant shark Carcharocles megalodon, which had a profound impact on the structuring of Miocene marine communities.

TL;DR: The most comprehensive phylogenetic analysis of Sphenisciformes to date, combining morphological and molecular data, places the new species outside the extant penguin radiation (crown clade: Speniscidae) and supports two separate dispersals to equatorial regions during greenhouse earth conditions.

TL;DR: In this article, hundreds of fossil marine vertebrates cropping out at Cerro Colorado (Pisco Basin, Peru) are identified and reported on a 1:6500 scale geological map and in a joined stratigraphic section.

TL;DR: This paper found thirty seven fossil whale skeletons with preserved baleen in the Neogene Pisco Formation during a transect survey in a limited area west of the Ica River Valley near the town of Ocucaje in southern Peru.

TL;DR: Being the geologically oldest neocete and the earliest mysticete to branch off described so far, the new taxon is interpreted as morphologically intermediate between basilosaurids and later toothed mysticetes, providing thus crucial information about the anatomy of the skull, forelimb, and innominate at these critical initial stages of mysticete evolution.