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Semibalanus balanoides
Scientific classification
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.[2] The order is divided into three suborders. Brachylepadomorpha contains a single family, Neobrachylepadidae, while Verrucomorpha contains two families, Verrucidae and Neoverrucidae. The remaining twelve families are in the suborder Balanomorpha.[3]


  1. ^ "Sessilia Lamarck, 1818". Integrated Taxonomic Information System. Retrieved October 14, 2010.
  2. ^ 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.
  3. ^ J. W. Martin & G. E. Davis (2001). An Updated Classification of the Recent Crustacea (PDF). Natural History Museum of Los Angeles County. pp. 1–132.

External links[edit]

  • Data related to Sessilia at Wikispecies