Ophiuroidea

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Definition
  1. Noun:
    • A class of echinoderms: "Ophiuroidea" is the scientific name for a class of marine animals within the phylum Echinodermata, commonly known as brittle stars and basket stars. They are characterized by a distinct central disc and long, slender, flexible arms that are sharply set off from the disc.
Usage Examples
  • Noun:
    • The Ophiuroidea are abundant in deep-sea environments.
    • Scientists studied the locomotion of the Ophiuroidea.
    • This fossil is identified as a member of the class Ophiuroidea.
Advanced Usage
  • In taxonomic context: Used formally in biological classification.
    • The phylogeny of the class Ophiuroidea is complex.
  • As a collective term: Refers to all species within this class.
    • Ophiuroidea display a wide range of feeding strategies.
Variants and Related Words
  • Ophiuroid (noun/adjective): A member of the Ophiuroidea; relating to the Ophiuroidea.
    • An ophiuroid was collected from the reef.
    • The ophiuroid morphology is distinct from that of true starfish (Asteroidea).
  • Brittle star (noun): Common name for most organisms in this class.
  • Basket star (noun): Common name for ophiuroids in the order Euryalida, which have branched arms.
Synonyms
  • Brittle stars (common name)
  • Basket stars (common name for a subgroup)
  • Snake stars (less common alternative name)
Related Phrases / Terms
  • Arm regeneration: A key biological feature of Ophiuroidea.
    • Ophiuroidea are known for their remarkable ability of arm regeneration.
  • Oral shield: A specific anatomical part of ophiuroids.
  • Ambulacral groove: A defining structural feature in echinoderms, including Ophiuroidea.
Noun
  1. brittle stars and basket stars

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