Incakujira anillodefuego

Incakujira anillodefuego is an extinct rorqual of the late Miocene and the type species of the genus Incakujira, whose name means Inca whale. It lived about 8 million to 7.3 million years ago off what is now the coast of Peru, and its fossils come from the Aguada de Lomas locality of the Pisco Formation. It was named and described in 2016 by Felix Marx and Naoki Kohno from two nearly complete skeletons collected between 1989 and 1990 that ended up in museums in Japan, and its species name refers to the Pacific Rim of Fire, which connects Peru and Japan. Both known specimens are immature, subadults of 7.15 and 8.25 metres, and features of the skull suggest that it may have fed by skimming, as sei and right whales do, rather than lunging like most modern rorquals.