merostomata

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Thân thiện
Definition
  1. Noun:
    • A taxonomic class of arthropods: "Merostomata" is a scientific term used in some biological classification systems to group together certain aquatic chelicerate arthropods. This class historically includes the extant order Xiphosura (horseshoe crabs) and the extinct order Eurypterida (sea scorpions).
Usage
  • The term "Merostomata" is used primarily in formal, scientific contexts such as paleontology, zoology, and biological taxonomy. It is not used in everyday language.
  • It is a plural noun (treating the group as a collective) but is often used with a singular verb in scientific writing when referring to the class as a single taxonomic unit.
  • Example:
Examples
  • Noun:
    • Fossil evidence suggests that the Merostomata were abundant during the Paleozoic era.
    • The classification of Merostomata has been revised in modern phylogenetics.
Advanced Usage
  • In taxonomic debate: The grouping "Merostomata" is considered paraphyletic by many modern cladistic analyses. It is often used in historical or alternative classification contexts.
    • Some researchers argue that the traditional class Merostomata should be disbanded.
Variants and Related Words
  • Merostome (n): An individual arthropod belonging to the class Merostomata.
    • The merostome's carapace was well-preserved in the fossil.
  • Merostomatous (adj): Of or relating to the Merostomata.
    • The merostomatous fossils were found in the shale deposit.
Synonyms
  • There are no direct common-language synonyms. In specific scientific contexts, it may be loosely grouped under terms like:
    • Aquatic chelicerates: A descriptive term referring to the subphylum Chelicerata that live in water, which includes the members of Merostomata.
Related Phrases / Terms
  • Class Merostomata: The full taxonomic designation.
    • The class Merostomata is characterized by a cephalothorax and a prominent telson.
  • Eurypterid: A member of the extinct order Eurypterida within Merostomata.
  • Xiphosuran: A member of the order Xiphosura within Merostomata.
Noun
  1. used in some classifications; includes the orders Xiphosura and Eurypterida

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