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Checklist for Subfamily Tetradellinae Swartz, 1936
and region Llandovery (Silurian)


Class
 		Ostracoda
Latreille, 1802
Mussel shrimps, Ostracods, Seed Shrimps		23
47
74		Families
Genera
Species		 
Taxom
 

Order
 		Beyrichicopida
Pokorny, 1954
9
21
27		Families
Genera
Species		 
Taxom
 

Suborder
 		Palaeocopa
Henningsmoen, 1953
7
18
23		Families
Genera
Species		 
Taxom
 

Superfamily
 		Hollinacea
Swartz, 1936
3
5
6		Families
Genera
Species		 
Taxom
 
FamilyTetradellidae
Swartz, 1936
3
3		Genera
Species		 
Taxom
 
SubfamilyTetradellinae
Swartz, 1936
2
2		Genera
Species		 
Taxom
 


Genera for Llandovery
2 Genera with 2 Species
Ctenobolbina Ulrich, 01SpeciesTaxom
Dilobella Ulrich, 01SpeciesTaxom


Species list for Llandovery
2 Species
Ctenobolbina proxima
Dilobella chapmani