Information about Eobalaenoptera Harrisoni
| Harrison's Whale | ||||||||||||||||||
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Extinct (fossil) | ||||||||||||||||||
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| Eobalaenoptera harrisoni Dooley, Fraser & Luo, 2004 | ||||||||||||||||||
Eobalaenoptera harrisoni is an extinct species of baleen whale. The species was first described in June 2004 by researchers at the Virginia Museum of Natural History.
The researchers identified the species from a partial skeleton found in 1990 in Caroline County, Virginia, the site of a prehistoric ocean, in middle Miocene Calvert Formation rocks. The 11 m (35 ft) skeleton proved to have similar morphological characteristics to a clade of whales consisting of two modern taxonomic families - Balaenopteridae (the rorquals), and Eschrichtiidae (a family with one surviving species, the Gray Whale).
The age of skeleton was estimated to be 14 million years, making the species the oldest known member of the clade by three to five million years. It also considerably narrowed the gap between the earliest known fossil record and estimated time of divergence of this clade from other baleen whales. Molecular studies have put this divergence time at around 25 million years.
The genus name Eobalaenoptera reflects the similarities between this skeleton and species in the genus Balaenoptera such as the Minke Whale; eo- is a prefix meaning dawn. The species is named after Carter Harrison, a volunteer worker at the museum.
References
- Alton. C. Dooley, Nicholas C. Fraser and Zhe-Xi Luo (2004). The Earliest Known Member of the Rorqual-Gray Whale Clade. Journal of Vertebrate Palaeontology 24 (2): 453-463.
External links
conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. Many factors are taken into account when assessing the conservation status of a species: not simply the number remaining, but the
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- For other uses of the term, see Fossil (disambiguation)
FOSSIL is a standard for allowing serial communication for telecommunications programs under the DOS operating system.
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Chordata
Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Mammalia
Linnaeus, 1758
Subclasses & Infraclasses
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Linnaeus, 1758
Subclasses & Infraclasses
- Subclass †Allotheria*
- Subclass Prototheria
- Subclass Theria
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Eutheria
Orders[1]
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Orders[1]
- Bobolestes
- Eomaia
- Maelestes
- Montanalestes
- Murtoilestes
- Prokennalestes
- Placentalia
- Superorder
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Cetacea
Brisson, 1762
Diversity
Around 88 species; see list of cetaceans or below.
Suborders
Mysticeti
Odontoceti
Archaeoceti (extinct)
(see text for families)
The order Cetacea
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Brisson, 1762
Diversity
Around 88 species; see list of cetaceans or below.
Suborders
Mysticeti
Odontoceti
Archaeoceti (extinct)
(see text for families)
The order Cetacea
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Mysticeti
Cope, 1891
Diversity
Around 15 species; see list of cetaceans or below.
Families
Balaenidae
Balaenopteridae
Eschrichtiidae
Neobalaenidae
The baleen whales, also called whalebone whales or great whales
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Cope, 1891
Diversity
Around 15 species; see list of cetaceans or below.
Families
Balaenidae
Balaenopteridae
Eschrichtiidae
Neobalaenidae
The baleen whales, also called whalebone whales or great whales
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binomial nomenclature is the formal system of naming species. The system is also called binominal nomenclature (particularly in zoological circles), binary nomenclature (particularly in botanical circles), or the binomial classification system.
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Mysticeti
Cope, 1891
Diversity
Around 15 species; see list of cetaceans or below.
Families
Balaenidae
Balaenopteridae
Eschrichtiidae
Neobalaenidae
The baleen whales, also called whalebone whales or great whales
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Cope, 1891
Diversity
Around 15 species; see list of cetaceans or below.
Families
Balaenidae
Balaenopteridae
Eschrichtiidae
Neobalaenidae
The baleen whales, also called whalebone whales or great whales
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Caroline County is a county located in the U.S. state — officially, "Commonwealth" — of Virginia. As of the 2000 census, the population was 22,121. Its county seat is Bowling Green6.
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The Miocene Epoch is a period of time that extends from about 23.03 to 5.332 million years before the present. As with other older geologic periods, the rock beds that define the start and end are well identified but the exact dates of the start and end of the period are uncertain.
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Location Calvert County, Maryland, USA
Coordinates
Area 1,313 acres (5.31 km²)
Governing body Maryland Department of Natural Resources
Calvert Cliffs State Park
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Coordinates
Area 1,313 acres (5.31 km²)
Governing body Maryland Department of Natural Resources
Calvert Cliffs State Park
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This article has been tagged since July 2007.
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whale can refer to all cetaceans, to just the larger ones, or only to members of particular families within the order Cetacea. The last definition is the one followed here. Whales are those cetaceans which are neither dolphins (i.e.
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family (Latin: familia, plural familiae) is a rank, or a taxon in that rank. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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Balaenopteridae
Gray, 1864
Genera
Balaenoptera
Megaptera
Rorquals are the largest group of baleen whales, with nine species in two genera.
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Gray, 1864
Genera
Balaenoptera
Megaptera
Rorquals are the largest group of baleen whales, with nine species in two genera.
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Balaenopteridae
Gray, 1864
Genera
Balaenoptera
Megaptera
Rorquals are the largest group of baleen whales, with nine species in two genera.
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Gray, 1864
Genera
Balaenoptera
Megaptera
Rorquals are the largest group of baleen whales, with nine species in two genera.
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Eschrichtiidae
Ellerman & Morrison-Scott, 1951
Genus: Eschrichtius
Species: E.
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Ellerman & Morrison-Scott, 1951
Genus: Eschrichtius
Species: E.
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Eschrichtiidae
Ellerman & Morrison-Scott, 1951
Genus: Eschrichtius
Species: E.
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Ellerman & Morrison-Scott, 1951
Genus: Eschrichtius
Species: E.
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Herod_Archelaus
