phylum Chordata

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Definition
  1. Noun:
    • A major taxonomic division in biological classification: "phylum Chordata" refers to a large, fundamental group within the animal kingdom, characterized by specific shared anatomical features.
    • Comprises animals possessing a notochord: This phylum includes all animals that, at some stage of their life cycle, have a notochord—a flexible, rod-shaped structure of support.
Usage Examples
  • Noun:
    • All vertebrates, such as mammals and birds, belong to the phylum Chordata.
    • The presence of a dorsal nerve cord is a key characteristic of the phylum Chordata.
Advanced Usage
  • "Within the phylum Chordata": used to specify a location or context inside this taxonomic group.
    • The evolution of jaws was a significant event within the phylum Chordata.
Variants and Related Words
  • Chordate (n): Any member of the phylum Chordata.
    • A tunicate is a marine invertebrate chordate.
  • Subphylum (n): A major subdivision within a phylum. The phylum Chordata contains subphyla like Vertebrata.
    • The subphylum Vertebrata is the most familiar group in the phylum Chordata.
Synonyms
  • Chordates: A common synonym referring to the members of this group collectively.
Related Phrases
  • Phylum level: The taxonomic rank of phylum.
    • At the phylum level, chordates are distinct from arthropods and mollusks.
Noun
  1. comprises true vertebrates and animals having a notochord

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