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Checklist for Subclass Thecostraca Gruvel, 1905
and region Penobscot County (Maine, USA)


Class
 		Maxillopoda
Dahl, 1956
Maxillopods		19
24
28		Families
Genera
Species		 
Taxom
 

Subclass
 		Thecostraca
Gruvel, 1905
4
5
7		Families
Genera
Species		 
Taxom
 


List of families for Penobscot County
4 Families width 7 Species
Pyrgomatidae (Gray, 1825)Coral barnacle1SpeciesTaxom
Balanidae (Leach, 1806)3SpeciesTaxom
Archaeobalanidae Newman & Ross, 19762SpeciesTaxom
Lepadidae Darwin, 1852Goose barnacles1SpeciesTaxom


Genera for Penobscot County
5 Genera with 7 Species
Adna Sowerby, 18231SpeciesTaxom
Balanus Da Costa, 1758Barnacle3SpeciesTaxom
Chirona Gray, 17671SpeciesTaxom
Lepas Linnaeus, 1758Goose Barnacles1SpeciesTaxom
Semibalanus Pilsbry, 17671SpeciesTaxom


Species list for Penobscot County
7 Species
Adna anglica (Sowerby, 1823)⇒ Megatrema anglicum Sowerby, 1823
Balanus balanus Linnaeus, 1758Common barnacle
Balanus crenatus Bruguière, 1789Mountain ninebark
Balanus tintinnabulum (Linnaeus, 1758)⇒ Chthamalus stellatus Poli, 1791
Chirona hameri Ascanius, 1767
Lepas (Lepas) anatifera Linnaeus, 1758Common goose barnacle
Semibalanus balanoides Linnaeus, 1767Acorn barnacle

Subnodes of Thecostraca with occurrences in Penobscot County
InfraclassCirripedia
Burmeister, 1834
Barnacles		4
5
7		Families
Genera
Species
Taxom



Links, sources and further information
Thecostraca at artfakta.se
Thecostraca at itis.gov
Thecostraca at marinespecies.org