Asteroidea

All Noun
29 examples (0.03 sec)
  • It was found that X. medusiformis was indubitably a member of class Asteroidea and was a sister taxon to Rathbunaster in the order Forcipulatida.
  • The genus of this species has transitioned back and forth between Asterina and Patiria since its inclusion in Fisher's 1911 North Pacific Asteroidea monograph.
  • The taxonomy of the group is relatively stable but there is ongoing debate about the status of the Paxillosida, and the deep-water sea daisies, though clearly Asteroidea and currently included in Velatida, do not fit easily in any accepted lineage.
  • The class Asteroidea belongs to the phylum Echinodermata.
  • Demasterias imbricata (Asteroidea) and Aeolidia papillosa (Gastropoda) are two notably frequent predator species.
  • Echinoderms of the classes Asteroidea (sea stars) and Echinoidea (sea urchins/sand dollars) have three small pincher-like jaws held up by a calcerous stalk, called pedicellariae, at the base of the spines on the body.
  • The largest species of echinoderm in terms of bulk is the starfish species Thromidia gigas, of the class Asteroidea, which reaches a weight of over 6 kg (13 lb).
  • It comprises about 21 genera and 116 species according to O'Loughlin & Waters (2004), whereas the World Asteroidea Database states that it includes 25 genera.
  • The "Cryptosyringida" hypothesis posits that the "sea-star" morphology is plesiomorphic for Eleutherozoa as a whole, and that starfish (Asteroidea) and brittle stars are not very closely related, the latter forming the clade Cryptosyringida together with the Echinozoa.

How Asteroidea gets used

Words starting with Asteroidea

Meaning of Asteroidea

  • noun Sea stars