Search results
Polychaeta ( / ˌpɒlɪˈkiːtə /) is a paraphyletic [1] class of generally marine annelid worms, commonly called bristle worms or polychaetes ( / ˈpɒlɪˌkiːts / ). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species are described in this class.
- Bobbit Worm
Eunice aphroditois is a benthic bristle worm of warm marine...
- Christmas Tree Worms
Like other annelids, these worms possess well-developed...
- Nereididae
Characteristics. The prostomium of Nereididae bears a pair...
- Bobbit Worm
Polychaetes, or bristle worms, are a class of annelid worms. They are generally found in a marine environment. There are more than 10,000 known species in this class. They are ancient animals, dating back to 518 million years ago. They are first found in the early Cambrian fossil beds of Sirius Passet in Greenland. [1]
People also ask
What is a Polychaeta worm?
Where are polychaetes found?
How many species of polychaetes are there?
What does a polychaete look like?
Polychaete, any worm of the class Polychaeta (phylum Annelida). About 8,000 living species are known. Polychaetes, which include rag worms, lugworms, bloodworms, sea mice, and others, are marine worms notable for well-defined segmentation of the body. Unique among annelids, most polychaete body.
- The Editors of Encyclopaedia Britannica
Polynoidae is a family of marine Polychaete worms known as " scale worms " due to the scale-like elytra on the dorsal surface. Almost 900 species are currently recognised belonging to 9 subfamilies and 167 genera. [1] . They are active hunters, but generally dwell in protected environments such as under stones.
- Polynoidae
- Phyllodocida
Polychaete or polychete is any of the diverse, mostly marine segmented worms of the annelid class Polychaeta, characterized by having most segments with one pair of lateral, fleshy, lobelike appendages called parapodia, with numerous bristles (setae) projecting from them.
- PolychaetaGrube, 1850
- Annelida
- Animalia
By Phil Myers. Polychaetes include such forms as sand worms, tube worms, and clam worms. Most have well developed, paired, paddle-like appendages (parapodia), well developed sense organs, and numerous setae (usually on the parapodia; "polychaete" means "many hairs").
3 days ago · Polychaetes are multi-segmented worms living in all environments in the world's oceans, present from abyssal depths to shallow estuaries and rocky shores, and even free swimming in open water. They are strictly aquatic annelids, but are the most abundant and diverse group of Phylum Annelida.