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  1. Valvatida - Wikipedia

  2. WoRMS - World Register of Marine Species - Valvatida

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    The Valvatida are an order of starfish in the class Asteroidea, which contains 695 species in 172 genera in 17 families. The order encompasses both tiny species, which are only a few millimetres in diameter, like those in the genus Asterina, and species which can reach up to 75 cm, such as species in the genus Thromidia.
    en.wikipedia.org
    The Valvatida, the most diversified Order within the Asteroidea, was never recovered as monophyletic in any of previous studies 1, 10. Our results concerning the taxonomic relationships within Valvatida are sensitive to the choice of dataset and analytical methods.
    In the ML trees, Goniasteridae (represented by Iconaster longimanus) was the sister family to the remaining families of Valvatida (except Ophidiasteridae) (Fig. 2 ). While in the BI trees, Goniasteridae was more closely related to Spinulosida, instead of other species of Valvatida (Fig. 3 ).
    The phylogenetic analysis showed that the orders Valvatida, Paxillosida, Forcipulatida are paraphyletic. Velatida was the sister order of all the others and then the cladeValvatida-Spinulosida-Paxillosida-Notomyotida versus Forcipulatida-Brisingida. Deep-sea asteroids were nested in different lineages, instead of a well-supported clade.
  4. New Genera, Species, and observations on the biology of Antarctic ...

  5. Valvatida - Animalia

  6. The World Asteroidea Database - Valvatida - World Register of …

  7. ADW: Valvatidae: INFORMATION

    WEBValvatidae. The Val­vati­dae are a fam­ily of small aquatic proso­branch snails, char­ac­ter­ized by a mul­ti­spi­ral op­er­cu­lum, and an an­i­mal with a pal­lial ten­ta­cle and a pro­trusi­ble bipecti­nate gill. Val­vata species from the North …

  8. Mitogenomics provides new insights into the phylogenetic