thaliacea

Thân thiện

A marine biologist observes a thaliacea drifting in the open ocean.

Definition

1. Noun:
   • A small taxonomic class of marine animals: "Thaliacea" refers to a minor class within the subphylum Tunicata (Urochordata), consisting of free-swimming, pelagic tunicates.
   • A group of gelatinous zooplankton: These are transparent, barrel-shaped organisms that move by jet propulsion and are important filter feeders in ocean ecosystems.

Usage Examples

• Noun:
  • The Thaliacea are often studied for their unique life cycle and filter-feeding mechanisms.
  • Marine biologists collected a sample containing several species from the class Thaliacea.

Advanced Usage

• In taxonomic hierarchy: The term is used in formal biological classification.
  • Thaliacea, along with Ascidiacea and Appendicularia, constitute the three main classes of tunicates.

Variants and Related Words

• Thaliacean (adj/noun): Of or belonging to the class Thaliacea; a member of this class.
  • The thaliacean specimen was remarkably preserved.
• Salp (noun): A common name for many species within the Thaliacea.
  • A chain of salps, a type of thaliacean, was observed near the surface.

Synonyms

• Pelagic tunicates: Describes their free-swimming, open-ocean habitat.
• Salps (common for many species, but not all Thaliacea are salps; some are pyrosomes or doliolids).

Related Phrases

• "Class Thaliacea": The full, formal taxonomic designation.
  • The organism was definitively placed within the class Thaliacea.

Học thuật

Noun

1. small class of free-swimming tunicates; sometimes classified as an order

Từ đồng nghĩa

• Thaliacea
• class Thaliacea