Tricladida
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| Tricladida | |
|---|---|
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| Schmidtea mediterranea, a dugesiid. | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Order: | Tricladida Lang, 1884 |
| Suborders[1] | |
Tricladida (Triclads) [2] is an order of the Turbellaria, a group of free-living flatworms.
Tricladida (Lang, 1884) is characterized by triply branched intestine and anteriorly situated ovaries, next to the brain. Today it is split into three suborders, according to their phylogenetic relationships: Maricola, Cavernicola and Continenticola. Formerly, the Tricladida was split according to habitats: Maricola, which is marine; Paludicola, which inhabits freshwater; and Terricola, which is land-dwelling.[3]
Contents |
[edit] Phylogeny and taxonomy
Phylogenetic tree after Carranza et al. (1998):[4]
| Tricladida |
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[edit] Taxonomy
Linnaean ranks after Sluys et al., 2009:[1]
- Order Tricladida
- Suborder Maricola
- Superfamily Cercyroidea
- Family Centrovarioplanidea
- Family Cercyridae
- Family Meixnerididae
- Superfamily Bdellouroidea
- Family Uteriporidae
- Family Bdellouridae
- Superfamily Procerodoidea
- Family Procerodidae
- Superfamily Cercyroidea
- Suborder Cavernicola[5]
- Family Dimarcusidae
- Suborder Continenticola
- Superfamily Planarioidea
- Family Planariidae
- Family Dendrocoelidae
- Family Kenkiidae
- Superfamily Geoplanoidea
- Family Dugesiidae
- Family Geoplanidae
- Superfamily Planarioidea
- Suborder Maricola
[edit] References
- ^ a b Sluys, R., Kawakatsu, M., Riutort, M. & Baguñà, J. 2009. "A new higher classification of planarian flatworms (Platyhelminthes, Tricladida)". Journal of Natural History, vol. 43, pp. 1763-1777.
- ^ "Tricladida". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=54468. Retrieved July 23, 2007.
- ^ Hallez P. (1892). Classification des Ticlades, Bulletin de la Société Zoologique de France.
- ^ Carranza, S, Littlewood DT, Clough KA, Ruiz-Trillo I, Baguñà J, Riutort M. 1998. "A robust molecular phylogeny of the Tricladida (Platyhelminthes: Seriata) with a discussion on morphological synapomorphies". Proceedings of the Royal Society B: Biological Sciences. 265(1396):631-640.
- ^ Sluys R. (1990). A monograph of the Dimarcusidae (Platyhelminthes, Seriata, Tricladida), Zoologica Scripta, volume 19, Issue 1, Pages 13—29.
[edit] External links
- Tricladida on the Encyclopedia of Life (EOL)
- Land planarians on the UF / IFAS Featured Creatures Web site
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