Thoracica

Thoracica
	Semibalanus balanoides
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Thecostraca
Subclass:	Cirripedia
Infraclass:	Thoracica; Darwin, 1854
Orders
	Balanomorpha Pilsbry, 1916; Calanticomorpha Chan et al., 2021; Iblomorpha Buckeridge & Newman, 2006; Pollicipedomorpha Chan et al., 2021; Scalpellomorpha Buckeridge & Newman, 2006; Verrucomorpha Pilsbry, 1916; † Archaeolepadomorpha Chan et al., 2021; † Brachylepadomorpha Withers, 1923; † Eolepadomorpha Chan et al., 2021;

Thoracica is an infraclass of crustaceans which contains the most familiar species of barnacles found on rocky coasts, such as Semibalanus balanoides and Chthamalus stellatus. They have six well-developed limbs, and may be either stalked or sessile. The carapace is heavily calcified. The group includes free-living and commensal species.

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