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Unidentified planarian. Planarians (triclads) are free-living flatworms of the class Turbellaria, [2] [3] order Tricladida, [4] which includes hundreds of species, found in freshwater, marine, and terrestrial habitats. [5] Planarians are characterized by a three-branched intestine, including a single anterior and two posterior branches. [5]
Kenkia glandulosa, the pink planarian, is a flatworm in the family Kenkiidae. [2] It is found only in the Devil's Icebox cave in Rock Bridge Memorial State Park in Boone County, Missouri, USA. The rarity of this species was once used as an argument to prevent the construction of a shopping mall in the area. [3]: 83
The complete mitogenome of Caenoplana coerulea is 18,621 bp in length. [7] Its main characteristic is a cytochrome c oxidase subunit 2 gene of unusual length, with a cox2 encoded protein 505 aa in length (compared to about 250 aa in other geoplanids); this characteristic of a very long cox2 is also found in other members of the subfamily Rhynchodeminae, to which Caenoplana coerulea belongs.
The brains of the free-living polyclad, Notoplana acticola, are considered true brains. [4] The body of the flatworm is bilaterally symmetrical and it involves cephalization. [4] Notoplana acticola brains are unique because of the cellular and subcellular neural components that regulate the behavior of the flatworm. [4]
Convolutriloba retrogemma is a reddish-brown acoel 2 mm in length also commonly known as redbug, red planaria, rust flatworm, or simply red flatworm. It is a marine animal that gets energy from its endosymbiotic algae or from the consumption of small invertebrates such as copepods and rotifers.
Rhabdocoela is an order of flatworms in the class Rhabditophora with about 1700 species described worldwide. The order was first described in 1831 by Christian Gottfried Ehrenberg. [1] Most of rhabdocoels are free-living organisms, but some live symbiotically with other animals. [2]
Rhabditophora (from rhabdito-, rhabdite + Greek-φορος [-phoros], bearer, i.e., "rhabdite bearers") is a subphylum (previously a class) of flatworms.It includes all parasitic flatworms (clade Neodermata) and most free-living species that were previously grouped in the now obsolete class Turbellaria.
Mesostoma ehrenbergii is a species of rhabdocoel flatworms in the family Typhloplanidae. [1 ... It was described by Gustav Woldemar Focke as Planaria ehrenbergii in ...