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Cetacea


'Cetacea' can also refer to...

Cetacea

Cetacea

Cetacea

Cetacea

Cetacea

Cetacea

Evolutionary Patterns in Cetacea Fishing Up Prey Size through Deep Time

Molecular Identification of Evolutionarily Significant Units in the Amazon River Dolphin Inia sp. (Cetacea: Iniidae)

The Position of Cetacea Within Mammalia: Phylogenetic Analysis of Morphological Data from Extinct and Extant Taxa

Stability of Cladistic Relationships between Cetacea and Higher-Level Artiodactyl Taxa

Patterns of Skull Variation of Brachydelphis (Cetacea, Odontoceti) from the Neogene of the Southeastern Pacific

More DNA support for a Cetacea/Hippopotamidae clade: the blood-clotting protein gene gamma-fibrinogen.

Phylogenetic evidence from the IRBP gene for the paraphyly of toothed whales, with mixed support for Cetacea as a suborder of Artiodactyla.

The complete mitochondrial DNA sequence of the greater Indian rhinoceros, Rhinoceros unicornis, and the Phylogenetic relationship among Carnivora, Perissodactyla, and Artiodactyla (+ Cetacea).

Relaxed Clocks and Inferences of Heterogeneous Patterns of Nucleotide Substitution and Divergence Time Estimates across Whales and Dolphins (Mammalia: Cetacea)

Influence of Alignment on the mtDNA Phylogeny of Cetacea: Questionable Support for a Mysticeti/Physeteroidea Clade

Phylogeny of the Beaked Whale Genus Mesoplodon (Ziphiidae: Cetacea) Revealed by Nuclear Introns: Implications for the Evolution of Male Tusks

Thewissen, J. G. M. (ed.). 1998. The Emergence of Whales: Evolutionary Patterns in the Origin of Cetacea. Plenum Press, New York, 477 pp. ISBN 0-306-45853-5, price (hardcover), $115.00

 

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; infraclass Eutheria, cohort Mutica)

An order that comprises the one extinct (Archaeoceti) and two extant (Odontoceti and Mysticeti) suborders of whales. The earliest whales (Archaeoceti) are known from Eocene rocks in Africa and South Asia (see Basilosaurus; Ambulocetus), and are descended from early Artiodactyla, probably more closely related to hippopotamus (Hippopotamidae) than to other groups. Of the two existing groups of whales, the Odontoceti (toothed whales) can be traced back to ancestral forms in the upper Eocene, while the first definitive Mysticeti (baleen whales) occur in Oligocene strata. Whales are streamlined, almost hairless, entirely aquatic. The fore limbs are modified to form paddles without visible digits, the hind limbs are absent, the pelvis is vestigial, except in some Archaeoceti. The tail fin is horizontal and used for propulsion. The skull is modified, with the nasal openings far back on the dorsal surface except in Physeteridae. The diet comprises fish and molluscs (Odontoceti) or mainly plankton (Mysticeti).

Subjects: Zoology and Animal Sciences.


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