Dinonemertes arctica | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Nemertea |
Class: | Hoplonemertea |
Order: | Polystilifera |
Family: | Dinonemertidae |
Genus: | Dinonemertes |
Species: | D. arctica |
Binomial name | |
Dinonemertes arctica Korotkevich, 1977 | |
Dinonemertes arctica is a species of ribbon worm within the family Dinonemertidae. [1] The species was described from a male holotype collected from the Arctic Ocean in its central region at a depth of 2980 meters. A male paratype was also collected in the Greenland Sea at a depth of 2800 meters. D. arctica is distinguishable from other members of the family Dinonemertidae from the common opening of the mouth and rhynchodeum. Its internal morphology is typical of the Dinonemertes genus, consisting of a rhynchocoel wall with three muscle layers. [2]
The black-throated loon, also known as the Arctic loon and the black-throated diver, is a migratory aquatic bird found in the northern hemisphere, primarily breeding in freshwater lakes in northern Europe and Asia. It winters along sheltered, ice-free coasts of the north-east Atlantic Ocean and the eastern and western Pacific Ocean. This loon was first described by Carl Linnaeus in 1758 and has two subspecies. It was previously considered to be the same species as the Pacific loon, of which it is traditionally considered to be a sister species, although this is debated. In a study that used mitochondrial and nuclear intron DNA, the black-throated loon was found to be sister to a clade consisting of the Pacific loon and two sister species, the common loon and the yellow-billed loon.
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Dinonemertidae is a family of worms belonging to the order Polystilifera.
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Dinonemertes is a genus of ribbon worms within the family Dinonemertidae.