subclass holocephali
Definition
- Noun:
- A taxonomic subclass of cartilaginous fish: "Subclass Holocephali" is a scientific classification for a group of fish characterized by having the upper jaw fused to the skull, a single gill opening on each side, and no scales. This group includes modern chimaeras (ratfish) and their extinct relatives.
Usage Examples
- Noun:
- The subclass Holocephali is distinct from sharks and rays within the class Chondrichthyes.
- Fossil evidence shows that the subclass Holocephali was more diverse in the past.
Advanced Usage
- In taxonomic hierarchy: The term is used in formal biological classification to denote a specific rank (subclass) within the class Chondrichthyes (cartilaginous fish).
- The phylogenetic study aimed to clarify the position of the subclass Holocephali.
Variants and Related Words
- Holocephali (noun): Often used interchangeably with "subclass Holocephali" in less formal scientific contexts.
- Holocephali diverged from elasmobranchs a long time ago.
- Holocephalian (adjective/noun): Relating to this subclass; a member of this subclass.
- The holocephalian fossil was remarkably well-preserved.
Synonyms
- Chimaeroids: A less formal term referring to the modern members of this group.
- Ratfish group: A common name-based reference.
Related Phrases
- "Member of the Holocephali": A phrase used to describe an organism belonging to this subclass.
- This extinct species was a member of the Holocephali.
Noun
-
chimaeras and extinct forms
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