Crinoidea
Definition
- Noun:
- A class of echinoderms: "Crinoidea" is the scientific name for a class of marine animals that includes sea lilies and feather stars. These are characterized by a cup-shaped body, multiple feathery arms used for filter feeding, and, in many species, a stalk for attachment to the seafloor.
Usage Examples
- Noun:
- The Crinoidea are among the most ancient and primitive of living echinoderms.
- Fossils of Crinoidea, often called crinoids, are common in Paleozoic rocks.
- The diver observed a beautiful Crinoidea, its feathery arms extended into the current.
Advanced Usage
- "Crinoid": This is the common term for any member of the class Crinoidea, used both for living animals and their fossils.
- The limestone was full of crinoid stem fragments.
Variants and Related Words
- Crinoid (n): The common name for an animal in the class Crinoidea.
- The crinoid anchored itself to the reef.
Synonyms
- Sea lily: Specifically refers to stalked crinoids.
- Feather star: Specifically refers to unstalked, free-moving crinoids.
Related Terms (Not Phrasal Verbs)
- Echinoderm: The larger phylum to which Crinoidea belong, which also includes starfish and sea urchins.
- Filter feeder: An organism that feeds by straining suspended matter from water, which describes the feeding method of Crinoidea.
Noun
-
sea lilies
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