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Infraclass of barnacles
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.
[2]
Classification
This article follows Chan et al. (2021) and WoRMS in placing Thoracica as an infraclass of
Thecostraca and in the following classification of thoracicans down to the level of family:
[3]
[4]
Infraclass Thoracica Darwin, 1854
Superorder
Phosphatothoracica Gale, 2019
Order
Iblomorpha Buckeridge & Newman, 2006
Family
Iblidae Leach, 1825
Family
Idioiblidae Buckeridge & Newman, 2006
Order †
Eolepadomorpha Chan et al., 2021
Family †
Eolepadidae Buckeridge, 1983
Family †
Praelepadidae Chernyshev, 1930
Superorder
Thoracicalcarea Gale, 2015
Order
Balanomorpha Pilsbry, 1916
Superfamily
Balanoidea Leach, 1817
Family
Balanidae Leach, 1817
Family
Pyrgomatidae Gray, 1825
Superfamily
Chthamaloidea Darwin, 1854
Family
Catophragmidae Utinomi, 1968
Family
Chionelasmatidae Buckeridge, 1983
Family
Chthamalidae Darwin, 1854
Family
Pachylasmatidae Utinomi, 1968
Family
Waikalasmatidae Ross & Newman, 2001
Superfamily
Coronuloidea Leach, 1817
Family
Austrobalanidae Newman & Ross, 1976
Family
Bathylasmatidae Newman & Ross, 1971
Family
Chelonibiidae Pilsbry, 1916
Family
Coronulidae Leach, 1817
Family
Tetraclitidae Gruvel, 1903
Superfamily
Elminioidea Chan et al., 2021
Family
Elminiidae Foster, 1982
Superfamily †
Pachydiadematoidea Chan et al., 2021
Family †
Pachydiadematidae Chan et al., 2021
Order
Calanticomorpha Chan et al., 2021
Family
Calanticidae Zevina, 1978
Family †
Cretiscalpellidae Buckeridge, 1983
Family †
Titanolepadidae Gale & Sørensen, 2015
Order
Pollicipedomorpha Chan et al., 2021
Family
Lithotryidae Gruvel, 1905
Family
Pollicipedidae Leach, 1817
Family †
Zeugmatolepadidae Newman, 1996
Order
Scalpellomorpha Buckeridge & Newman, 2006
Superfamily
Lepadoidea Chan et al., 2021
Family
Heteralepadidae Nilsson-Cantell, 1921
Family
Lepadidae Darwin, 1852
Family
Malacolepadidae Hiro, 1937
Family
Poecilasmatidae Annandale, 1909
Family
Rhizolepadidae Zevina, 1980
Superfamily
Neolepadoidea Chan et al., 2021
Family
Neobrachylepadidae Newman & Yamaguchi, 1995
Family
Neolepadidae Yamaguchi, Newman & Hashimoto, 2004
Family
Neoverrucidae Newman, 1989 in Hessler & Newman, 1989
Family
Probathylepadidae Ren & Sha, 2015
Superfamily
Scalpelloidea Chan et al., 2021
Family
Scalpellidae Pilsbry, 1907
Family †
Proverrucidae Newman, 1989 in Hessler & Newman, 1989
Order
Verrucomorpha Pilsbry, 1916
Family
Verrucidae Darwin, 1854
Family †
Eoverrucidae Gale, 2020
Order †
Archaeolepadomorpha Chan et al., 2021
Family †
Archaeolepadidae Gale, 2019
Family †
Myolepadidae Gale, 2015 in Gale & Sørensen, 2015
Family †
Stramentidae Withers, 1920
Order †
Brachylepadomorpha Withers, 1923
Family †
Brachylepadidae Woodward, 1901
References