''Miocaperea'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

pygmy right whale The pygmy right whale (''Caperea marginata'') is a species of baleen whale. It may be a member of the cetotheres, a family of baleen whales which until 2012 were thought to be extinct; ''C. marginata'' has otherwise been considered the monoty ...

from the

Late Miocene The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene Epoch made up of two stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch, which lasted from 11.63 Ma (million years ago) to 5.333 Ma. The ...

Pisco Formation The Pisco Formation is a geologic formation located in Peru, on the southern coastal desert of Ica and Arequipa. The approximately thick formation was deposited in the Pisco Basin, spanning an age from the Middle Miocene up to the Early Pleis ...

of Peru.''Miocaperea''
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Fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was cre ...

.org Its type species is ''Miocaperea pulchra''.

Evolution and significance

The discovery of ''Miocaperea'' is significant, because neobalaenines were previously unknown in the fossil record, except for an isolated petrosal (ear bone) from late Miocene-aged deposits in Australia. A previous study placed the divergence date of Neobalaeninae from other mysticetes at about 23 million years,Sasaki T, Nikaido M, Hamilton H et al. (2005) Mitochondrial phylogenetics and evolution of mysticete whales. Systematic Biology 54(1): 77–90. and the age of ''Miocaperea'' lends credence to the notion of an origin for Neobalaeninae deep in the early Miocene.

References

{{Taxonbar, from=Q15708539 Baleen whales Miocene cetaceans Miocene mammals of South America Neogene Peru Fossils of Peru Pisco Formation Fossil taxa described in 2012