branchiostomidae
Definition
- Proper noun:
- Branchiostomidae: A family of small, elongated, fish-like marine chordates commonly known as lancelets. They are characterized by their notochord, which persists throughout life, and their filter-feeding lifestyle. This family represents a key group in understanding chordate evolution.
Usage Notes
- Branchiostomidae is a scientific, taxonomic term used primarily in biology and zoology. It is always treated as a singular noun (e.g., "Branchiostomidae is a family..."). It is typically used in formal, academic, or technical writing.
Examples of Usage
- Proper noun:
- The family Branchiostomidae includes the well-known genus Branchiostoma.
- Studies on Branchiostomidae provide crucial insights into early chordate development.
Advanced Usage
- In taxonomic hierarchy: The term is used to classify organisms within the order Amphioxiformes.
- The phylogenetic position of Branchiostomidae is central to debates on vertebrate origins.
Variants and Related Words
- Lancelet (n): The common name for any member of the family Branchiostomidae.
- Lancelets are often found buried in sandy seabeds.
- Amphioxus (n, historical): An older, informal name for lancelets, often used in literature.
- The term "amphioxus" is still encountered in older biological texts.
Synonyms
- Lancelets: The common English name for the family.
- Cephalochordates: Refers to the subphylum (Cephalochordata) to which this family belongs, often used in a broader taxonomic context.
Related Phrases and Terms
- Branchiostoma lanceolatum: The scientific name for the European lancelet, a typical species within this family.
- Branchiostoma lanceolatum is a model organism in evolutionary developmental biology.
Noun
-
lancelets
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