Biology:Crassiclitellata
Crassiclitellata (common name, earthworms)[1] is an order of annelids belonging to the class Clitellata.[2].
Despite its common name, not all crassiclitellata are what most people mean when referring to earthworms- those are the species that belong in this order's lumbricidae family, whose Lumbricus terrestris species represent the standard garden worms and nightcrawlers familiar to most people
Etymology
This order's name, crassiclitellata, can literally mean "thick saddle." Broken down, "crassi" from Latin word for "thick" or "fat," and "clitellata," stemming form the Latin word for a raised bump, signifying the band near the head of the worm.[3][4] Thus, this order can be characterized by the types of annelids whose clitellum is more bulbous than the rest of the Clitellata class.
Families
Crassiclitellata includes the following families:[2]
- Acanthodrilidae
- Benhamiidae
- Eudrilidae
- Hippoperidae
- Komarekionidae
- Lumbricidae
- Lutodrilidae
- Megascolecidae
- Microchaetidae
- Sparganophilidae
- Tumakidae
- Typhaeidae
References
- ↑ "Phylogenomic analyses of Crassiclitellata support major Northern and Southern Hemisphere clades and a Pangaean origin for earthworms" (in en). BMC Ecology and Evolution. https://link.springer.com/article/10.1186/s12862-017-0973-4.
- ↑ 2.0 2.1 "Crassiclitellata" (in en). https://www.gbif.org/species/5958860.
- ↑ "crassus" (in en). Online Etymology Dictionary. https://www.etymonline.com/word/clitellum.
- ↑ "clitellum" (in en). Wiktionary. https://en.wiktionary.org/wiki/crassus.
Wikidata ☰ Q5154131 entry
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