X. bocki. Black arrow indicates side furrow. a is the anterior tip. p is the posterior tip. Black triangle indicates mouth. White triangle indicates circumferential furrow. The scale bar in the bottom right is 1 cm.
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Xenacoelomorpha
Family:
Xenoturbellidae
Genus:
Xenoturbella
Species:
X. bocki
Binomial name
Xenoturbella bocki
Westblad, 1949
Xenoturbella bocki is a marine benthic worm-like species from the genus Xenoturbella. It is found in saltwater sea floor habitats off the coast of Europe, predominantly Sweden. It was the first species in the genus discovered. Initially it was collected by Swedish zoologist Sixten Bock in 1915, and described in 1949 by Swedish zoologist Einar Westblad.[1] The unusual digestive structure of this species, in which a single opening is used to eat food and excrete waste, has led to considerable study and controversy as to its classification. It is a bottom-dwelling, burrowing carnivore that eats mollusks (likely larval forms, as opposed to hard-shelled adults).
^Westblad, E. (1949). "Xenoturbella bocki n. g., n. sp., a peculiar, primitive Turbellarian type". Arkiv för Zoologi. 1: 3–29.
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PMID 21307940. Lundin, K (1998). "The epidermal ciliary rootlets of Xenoturbellabocki (Xenoturbellida) revisited: new support for a possible kinship with...
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Nyengaard, Jens R.; Obst, Matthias; Thorndyke, Michael C. (2013). "Xenoturbellabocki exhibits direct development with similarities to Acoelomorpha". Nature...
Bernhard, D.; Schlegel, M. (August 2007). "The mitochondrial DNA of Xenoturbellabocki: genomic architecture and phylogenetic analysis" (PDF). Theory Biosci...
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