class archiannelida

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class archiannelida

A marine biologist examines a specimen of class Archiannelida under a microscope.

Definition
  1. Noun:
    • A taxonomic class within the phylum Annelida: "Class Archiannelida" refers to a specific, primitive group of segmented worms (annelids) in biological classification. These worms are considered to have simple, ancestral characteristics compared to other annelids.
Usage Examples
  • Noun:
    • The class Archiannelida includes marine worms with relatively simple body structures.
    • Some biologists study the class Archiannelida to understand early annelid evolution.
Advanced Usage
  • In taxonomic hierarchy: The term is used in formal scientific classification to denote a rank below "phylum" and above "order."
    • The species was reclassified and placed within the class Archiannelida.
Variants and Related Words
  • Archiannelid (n): An individual worm belonging to the class Archiannelida.
    • The archiannelid burrowed into the sandy sediment.
Synonyms
  • Primitive annelids: A descriptive synonym highlighting their ancestral features.
  • Ancient segmented worms: A common, non-technical paraphrase.
Notes on Meaning
  • Scientific Context: This term is almost exclusively used in specialized biological and zoological contexts. It is not used in everyday language.
  • Historical Classification: It is important to note that "Archiannelida" is sometimes considered a paraphyletic group, and its taxonomic status can vary between different classification systems. Some modern systems may not recognize it as a formal class.
class archiannelida

A marine biologist examines a specimen of class Archiannelida under a microscope.

Noun
  1. a class of Annelida

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