hexanchidae
Definition
- Noun:
- A family of primitive sharks: "Hexanchidae" is the scientific family name for a group of sharks considered evolutionarily primitive, characterized by having six or seven gill slits, a single dorsal fin, and an anal fin.
Usage Examples
- Noun:
- The Hexanchidae family includes species like the cow shark and the frilled shark.
- Fossil records show that Hexanchidae have existed for millions of years.
Advanced Usage
- In taxonomic context: Used specifically in scientific classification (zoology, marine biology) to denote this particular family within the order Hexanchiformes.
- The specimen was classified under Hexanchidae based on its distinct gill slit count.
Variants and Related Words
- Hexanchiform (adj): Relating to the order Hexanchiformes, which includes the family Hexanchidae.
- The hexanchiform body plan is considered very ancient.
- Cow shark (n): A common name for some members of the Hexanchidae family.
- Frilled shark (n): Another common name for a species () within Hexanchidae.
Synonyms
- Cow sharks (common name)
- Sixgill and sevengill sharks (descriptive term)
Related Phrases
- Primitive shark family: A descriptive phrase often used to explain Hexanchidae.
- The Hexanchidae are a primitive shark family with unique anatomical features.
Noun
-
primitive sharks
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