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"Semibalanus balanoides"
Semibalanus balanoides
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Maxillopoda
Infraclass: Cirripedia
Superorder: Thoracica
Order: Sessilia
Lamarck, 1818[1]

Sessilia is an order of barnacles, comprising the barnacles without stalks, or acorn barnacles. They form a monophyletic group and are probably derived from stalked barnacles.[3] The order is divided into three suborders. The Brachylepadomorpha contain a single family, Neobrachylepadidae, while the Verrucomorpha contain two families, Verrucidae and Neoverrucidae. The remaining 12 families are in the suborder Balanomorpha.[4]


  1. ^ "Sessilia Lamarck, 1818". Integrated Taxonomic Information System. Retrieved October 14, 2010.
  2. ^ WoRMS (2019). Sessilia. Accessed at: on 2019-01-16
  3. ^ Marcos Pérez-Losada; Jens T. Høeg; Keith A. Crandall (2004). "Unraveling the evolutionary radiation of the thoracican barnacles using molecular and morphological evidence: a comparison of several divergence time estimation approaches" (PDF). Systematic Biology. 53 (2): 244–264. doi:10.1080/10635150490423458. PMID 15205051.
  4. ^ Martin, Joel W.; Davis, George E. (2001). An Updated Classification of the Recent Crustacea. CiteSeerX[page needed]

External links[edit]

  • Data related to Sessilia at Wikispecies