Definition

1. Noun:
   • A taxonomic class of plants: "class Ginkgopsida" is a botanical classification used for a group of gymnosperm plants. In some taxonomic systems, this group is ranked as a class; in others, it is considered a subdivision. It is used in certain classifications to denote one of the five major subdivisions of the division Gymnospermophyta, comprising the ginkgo trees.

Examples of Usage

• Noun:
  • The fossil record provides evidence for the ancient lineage of class Ginkgopsida.
  • Botanists debate whether class Ginkgopsida should be treated as a separate class or a subdivision.

Advanced Usage

• In taxonomic hierarchy: The term is used in the scientific context of plant systematics to categorize and discuss the evolutionary relationships of ginkgoes.
  • The sole surviving species, Ginkgo biloba, is placed within class Ginkgopsida.

Variants and Related Words

• Ginkgoopsida: An alternative spelling for the same taxonomic class.
• Ginkgophyta: A division or phylum name that may be used synonymously or to encompass a broader group including the ginkgoes.
• Ginkgoales: The order within class Ginkgopsida, containing the ginkgo family and its extinct relatives.

Synonyms

• Ginkgos: A common name referring to the plants within this class.
• Ginkgo plants: A descriptive term for members of this group.

Related Phrases

• Division Gymnospermophyta: The larger botanical division under which class Ginkgopsida is sometimes classified.
• Living fossil: A common descriptive phrase for , the only living representative of this class.

Noun

1. ginkgos: in some systems classified as a class and in others as a subdivision; used in some classifications for one of five subdivisions of Gymnospermophyta