Bohaskaia monodontoides, a New Monodontid (Cetacea, Odontoceti, Delphinoidea) from the Pliocene of the Western North Atlantic Ocean

  title={Bohaskaia monodontoides, a New Monodontid (Cetacea, Odontoceti, Delphinoidea) from the Pliocene of the Western North Atlantic Ocean},
  author={Jorge V{\'e}lez‐Juarbe and Nicholas D. Pyenson},
ABSTRACT Here we describe Bohaskaia monodontoides, a new taxon of beluga-like odontocete cetacean from the early Pliocene Yorktown Formation of Virginia and North Carolina. Among odontocetes, Bohaskaia shares key characteristics of the rostrum and face with belugas (Delphinapterus leucas), narwhals (Monodon monoceros), and Denebola brachycephala from the late Miocene of Baja California, thus placing it as a member of the Monodontidae. It also displays autapomorphies that merit its placement… 

A New Monodontidae (Cetacea, Delphinoidea) from the Lower Pliocene of Italy Supports a Warm-Water Origin for Narwhals and White Whales

The phylogenetic analysis, the first including all taxa of Monodontidae, recovers Casatia as a crown monodontid, more closely related to Delphinapterus than to Monodon and sister group of an unnamed taxon from the North Sea.


An incomplete cranium, three cervicals (including the axis) and two likely lumbars of a monodontid cetacean are here described from lower Pliocene (ca. 5.1–4.5 Ma) marine sandstones cropping out at

First monodontid cetacean (Odontoceti, Delphinoidea) from the early Pliocene of the north‐western Pacific Ocean

Monodontids are among the most enigmatic cetaceans due to their scarcity in the fossil record. Previously, except for fragmentary materials, only three skulls were known from the pre‐Pleistocene;

Pygmy Sperm Whales (Odontoceti, Kogiidae) from the Pliocene of Florida and North Carolina

The cooccurrence of two taxa in North Carolina may represent one of the earliest evidences of sympatry in kogiids and may demonstrate that this ecological behavior has been part of the natural history of this group at least since the deposition of the Yorktown Formation at Lee Creek.

A new delphinid from the lower Pliocene of the North Sea and the early radiations of true dolphins

Abstract. With a remarkable exception for the Mediterranean, the worldwide Pliocene record of true dolphins (Cetacea, Odontoceti, Delphinidae) remains scarce, in stark contrast with the large number

Two New Extinct Basal Phocoenids (Cetacea, Odontoceti, Delphinoidea), from the Upper Miocene Koetoi Formation of Japan and Their Phylogenetic Significance

A comprehensive morphological cladistic analysis indicates that the two new extinct species are the second-most basal phocoenids next to Pterophocaena and that Phocoenidae is the sister group of Delphinidae.

A new Oligo-Miocene dolphin from New Zealand: Otekaikea huata expands diversity of the early Platanistoidea

The New Zealand fossil dolphin Otekaikea huata has multiple procumbent tusks passing back to otherwise near-homodont and polydont teeth, and an elevated face for the nasofacial muscles implicated in production of echolocation sounds.

Fossil Dolphin Otekaikea marplesi (Latest Oligocene, New Zealand) Expands the Morphological and Taxonomic Diversity of Oligocene Cetaceans

The New Zealand fossil dolphin “Prosqualodon” marplesi is here identified as a crown odontocete that represents a new genus, Otekaikea, and adds to the generic diversity of Oligocene odontOCetes.

Neuroanatomy and inner ear labyrinths of the narwhal, Monodon monoceros, and beluga, Delphinapterus leucas (Cetacea: Monodontidae)

This work represents the first comparative internal anatomical study of the endocranium and inner ear labyrinths of this small clade of toothed whales and shows that differences in the shape of the brain, vasculature, and neural canals of both species may relate to differences in diving and other behaviors.



A monodontid cetacean from the Early Pliocene of the North Sea

A partial skeleton from the Early Pliocene of Antwerp (north of Belgium), including a fragmentary skull, corresponds to the first record of a fossil member of the family Monodontidae in the North

A new species of Haborophocoena, an Early Pliocene phocoenid cetacean from Hokkaido, Japan

A new species of phocoenid cetacean Haborophocoena is collected from the Early Pliocene Embetsu Formation, in the close vicinity to the site where the holotype of the type species of the genus Haborophilecoena was retrieved, and it is suggested that the genus diversified in the northwestern Pacific of early PlIocene time.


River dolphins are a non-monophyletic (paraphyletic or polyphyletic) group of Odontoceti that inhabit freshwater, estuarine, and coastal waters in India, China, and South America. Both molecular and

Ostracode biostratigraphy of the Yorktown Formation (upper Miocene and lower Pliocene) of Virginia and North Carolina

  • J. Hazel
  • Environmental Science, Geology
  • 1971
The Yorktown Formation of Virginia and North Carolina is divided into three ostracode assemblage zones based on the occurrence of 230 species in 43 samples. The samples were compared in Q-mode using


This study evaluates a comprehensive set of cranial, postcranial, and soft anatomical characters to infer interrelationships among extant species and several well-known fossil phocoenids, using two different methods to analyze polymorphic data: polymorphic coding and frequency step matrix.

Planktonic foraminiferal assemblage of the Yorktown Formation, Virginia, USA

Planktonic foraminifers from Coastal Plain deposits in southeastern Virginia provide biochronologic control and paleoceanographic information for the lectostratotype of the Yorktown Formation and

Variation of spotted and spinner porpoise (genus Stenella) in the Eastern Pacific and Hawaii

Spotted and spinner porpoise occur in coastal and offshore tropical waters of the eastern and central Pacific, as well as elsewhere in world tropical waters. They are important in the tropical

Late Cenozoic Stages and Molluscan Zones of the U.S. Middle Atlantic Coastal Plain

  • B. Blackwelder
  • Geology, Environmental Science
    Journal of Paleontology
  • 1981
Pliocene to Holocene deposits of the U.S. Atlantic Coastal Plain from Maryland to Georgia are divided into four stages and four substages using molluscan biostratigraphic data. These divisions are

The Therian Skull: A Lexicon with Emphasis on the Odontocetes

This lexicon is an attempt to remedy that situation in that it provides headwords and definitions for all the terms that have been used in describing the mammal skull and notes the synonymous terms.