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Checklist for Family Graviidae Polenova, 1962
and region Silurian (Paleozoic)


Class
 		Ostracoda
Latreille, 1802
Mussel shrimps, Ostracods, Seed Shrimps		42
178
408		Families
Genera
Species		 
Taxom
 

Order
 		Beyrichicopida
Pokorny, 1954
15
74
224		Families
Genera
Species		 
Taxom
 

Suborder
 		Binodicopa
Schallreuter, 1972
2
6
16		Families
Genera
Species		 
Taxom
 

Superfamily
 		Aechminacea
Bou?ek, 1936
2
6
16		Families
Genera
Species		 
Taxom
 
FamilyGraviidae
Polenova, 1962
2
2		Genera
Species		 
Taxom
 


Genera for Silurian
2 Genera with 2 Species
Ligerina Pranskevichius, 19721SpeciesTaxom
Ortygia Pranskevichius, 19721SpeciesTaxom


Species list for Silurian
2 Species
Ligerina tauragensis Pranskevichius, 1972
Ortygia clivosa Pranskevichius, 1972


Links, sources and further information
Graviidae at gbif.org
Graviidae at irmng.org