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In the past 20 years, new classification systems based on more rigorous phylogenetic analyses have been proposed to replace traditional brachiopod classification and have been adopted to different degrees by scientists.

("Brachiopoda", 2013; Brusca and Brusca, 2003; Carlson, 1995; Cohen and Gawthrop, 1997; Holmer, et al., 1995; Popov, et al., 1993; Ramel, 2012; Rowell, 1982; Sperling, et al., 2011; Williams, et al., 1996; Zhang, 2011) All brachiopods filter feed on planktonic organisms and possess a distinctive feeding structure called a lophophore.

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"We are studying the DNA, molecule by molecule, to try and determine what the mutation is and how we can more easily diagnose this disorder in horses," said King.

After realizing Koko had internal testes, researchers performed surgery to remove them in the hope that she would become less aggressive.

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Once the mutation is located, a better tool could be developed to test animals suspected of having the condition.This structure is composed of a pair of tentacle-bearing arms that have a circular, U-shaped, or highly coiled arrangement, depending on the species, and generates the feeding currents that these organisms use to capture prey.These organisms generally broadcast spawn, although females of a few species take sperm into their mantle cavity, where fertilization occurs and eggs may be brooded. Brachiopods possess a distinct, free-living larval stage called a lobate larva, which have different morphologies and developmental trajectories in Although the number of living brachiopod species is relatively low compared to many other phyla, brachiopods have one of the most prolific fossil records of any organismal group, dating back to the early Cambrian Period."Before the surgery she was so aggressive that it was too dangerous to ride her," said the owner Sam Campbell. She is an incredibly lovely horse." Since then both Sequoia and Pandora have undergone the same procedure at the Ontario Veterinary College. Google(); req('single_work'); $('.js-splash-single-step-signup-download-button').one('click', function(e){ req_and_ready('single_work', function() ); new c.

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