New Middle Eocene Whales from the Pisco Basin of Peru

  title={New Middle Eocene Whales from the Pisco Basin of Peru},
  author={Mark D. Uhen and Nicholas D. Pyenson and Thomas DeVries and Mario Urbina and Paul R. Renne},
  booktitle={Journal of Paleontology},
Abstract Three new specimens of middle Eocene cetaceans are reported from the Pisco Basin of southern Peru. All three specimens originate from the Paracas Formation and their minimum age is constrained to about 37 Ma using 40Ar/39Ar dating of ash collected ∼100 m up section from the source localities. Two new genera of archaeocete cetaceans are described along with additional material of another distinctive protocetid, which is not named pending the discovery of more complete material… 

Eocene Antarctica: a window into the earliest history of modern whales

The Eocene–Oligocene Southern Ocean is thought to have played a major role in cetacean evolution. Yet, fossils from its heart – Antarctica – are rare, and come almost exclusively from the Eocene La

Eocene Basilosaurid Whales from the La Meseta Formation, Marambio (Seymour) Island, Antarctica

Abstract. Basal fully aquatic whales, the basilosaurids are worldwide known from Bartonian—Priabonian localities, indicating that this group was widely distributed during the late middle Eocene. In

The first possible remingtonocetid stem whale from North America

This work identifies an unusual tooth discovered in the middle Eocene Superior Stone Quarry near Castle Hayne, North Carolina, USA as a premolar of a possible member of the Remingtonocetidae, which would extend the range of this family across the Atlantic to eastern North America.

A small whale reveals diversity of the Eocene cetacean fauna of Antarctica

Abstract Cetacean fossils have been recorded from middle and late Eocene deposits on Seymour Island since the beginning of the twentieth century and include fully aquatic Basilosauridae and stem

A rhinopristiform sawfish (genus Pristis) from the middle Eocene (Lutetian) of southern Peru and its regional implications

Modern sawfishes (Rhinopristiformes: Pristidae) are circumglobally distributed in warm waters and are common in proximal marine and even freshwater habitats. The fossil record of modern pristid

New Specimens of Protocetidae (Mammalia, Cetacea) from New Jersey and South Carolina

Several protocetid teeth are described from New Jersey and South Carolina, where they were previously misidentified and represent the northern-most discovery of protocETids in the world.

A Giant Eocene Whale from Ukraine Uncovers Early Cetacean Adaptations to the Fully Aquatic Life

The earliest fully aquatic cetaceans arose during the Middle Eocene; however, the earliest stage of their divergence is obscure. Here, we provide a detailed redescription of an unusual early



An archaeocete whale (Cetacea: Archaeoceti) from the Eocene Waihao Greensand, New Zealand

ABSTRACT An incomplete skull, four vertebrae, two teeth, and other, smaller fragments confirm the early occurrence of dorudontine whales (Cetacea: Archaeoceti: Basilosauridae) in the Southwest

A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina

A new genus and species of protocetid cetacean is described from a partial skull, the posterior portion of both dentaries, 13 vertebrae, and elements of 15 ribs found in the Cross Member of the late middle Eocene Tupelo Bay Formation in Berkeley County, South Carolina.

Late Eocene penguins from West Antarctica: systematics and biostratigraphy

Abstract Penguins are by far the most dominant group of marine vertebrates in the Eocene La Meseta Formation (Seymour Island, Antarctica). We analysed the penguin fauna recovered there from both a

An aquatic sloth from the Pliocene of Peru

GROUND sloths (Gravigrada, Xenarthra) are known from middle or late Oligocene to late Pleistocene in South America1 and from late Miocene to late Pleistocene in North America2. They are medium to

Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change

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.

A new middle Eocene protocetid whale (Mammalia: Cetacea: Archaeoceti) and associated biota from Georgia

A shallow-marine fossil biota was recovered from the Blue Bluff unit (formerly part of the McBean Formation) in the Upper Coastal Plain of eastern Georgia. Biochronologically significant mollusks

A new xenorophus‐like odontocete cetacean from the oligocene of North Carolina and a discussion of the basal odontocete radiation

Synopsis Oligocene cetaceans in eastern North America are currently only reported from the area around Charleston, South Carolina, despite the relative abundance of Oligocene nearshore marine rocks

New species of protocetid archaeocete whale, Eocetus wardii (Mammalia: Cetacea) from the middle Eocene of North Carolina

  • M. Uhen
  • Biology
    Journal of Paleontology
  • 1999
A new species of protocetid archaeocete, Eocetus wardii n. sp., is named based on material from the late Lutetian (middle Eocene, 43-44 Ma) Comfort Member of the Castle Hayne Formation, North


The pelves resemble those of Basilosaurus, documenting a similar stage of hind limb reduction in dorudontines and suggesting that Chrysocetus was not able to support its body on land.