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Terebellida
Terebellida make up an Order (biology), order of the Polychaete, Polychaeta class (biology), class, commonly referred to as "bristle worms". Together with the Sabellida, the Spionida and Incertae sedis, some enigmatic families of unclear Taxonomy (biology), taxonomic relationship (e.g. the Saccocirridae), they make up the Subclass (biology), subclass Canalipalpata, one of the three main clades of polychaetes. Like most polychaetes, almost all members of the ''Terebellida'' are Marine (ocean), marine organisms. Most are small, Sessility (zoology), sessile detritivores (deposit feeders) which Tube worm (body plan), live in small tubes they build from mud or similar substrate, or burrow in the sand. Their central nervous system displays characteristic Synapomorphy, apomorphies. Systematics There is little consensus on the number of Family (biology), families. Some treatments accept as little as five, while other authors list over a dozen. Here, the more inclusive view of the Tereb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canalipalpata
Canalipalpata, also known as bristle-footed annelids or fan-head worms, is an order of polychaete worms, with 31 families in it including the suborder Sabellida (families Serpulidae (tubeworms) and Sabellidae (fanworms and feather duster worms) and the Alvinellidae, a family of deep-sea worms associated with hydrothermal vents. The Canalipalpata have no teeth or jaws. Most are filter feeders. They have grooved palpi, which are covered in cilia. These cilia are used to transport food particles to the mouth. However, the cilia and grooves have been lost in the Siboglinidae family. Fossil record The earliest known member of the Canalipalpata is '' Terebellites franklini'', which was found in the Clouds Rapids Formation of Newfoundland, and dates from the mid Cambrian (St David's series). Use in aquaria Many species of Canalipalpata are visually attractive. Fanworms and Christmas tree worms (a type of serpulid) are recommended as species for beginners to keep in a marine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
