Aplacophora
Definition
Noun 1. A taxonomic order of deep-sea mollusks: Aplacophora is an order within the class Solenogastres (or sometimes grouped with Caudofoveata in the class Aplacophora), characterized by worm-like, shell-less bodies covered in a cuticle with embedded calcareous spicules. They are considered primitive, deep-sea mollusks.
Usage
- The class Aplacophora includes small, benthic marine invertebrates.
- Scientists study the anatomy of Aplacophora to understand early molluscan evolution.
- Due to their deep-sea habitat, members of the Aplacophora are rarely observed.
Advanced Usage
- In taxonomic discussions, Aplacophora is sometimes used to refer to a class comprising the orders Solenogastres and Caudofoveata, rather than a single order.
- The term is primarily used in scientific literature (zoology, marine biology, taxonomy).
Variants and Related Words
- Aplacophoran (noun/adjective): A member of the Aplacophora; relating to the Aplacophora.
- The aplacophoran specimen was collected from a hydrothermal vent.
- Solenogaster: A common name for an organism in the order Solenogastres, often synonymous with Aplacophora in broader usage.
Synonyms
- Solenogastres (as an order name)
- Deep-sea mollusks (descriptive, not taxonomic)
Related Terms & Context
- Mollusca: The phylum to which Aplacophora belongs.
- Amphineura: An older, sometimes used taxonomic grouping that included Aplacophora and Polyplacophora (chitons).
- Shell-less mollusk: A descriptive term highlighting a key characteristic.
- Benthic: Referring to the ocean floor, which is their habitat.
Noun
-
an order of Amphineura
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