Species list, Checklist of Subfamily Sigmoopsinae for Upper Ordovician (Ordovician)

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Checklist for Subfamily Sigmoopsinae Henningsmoen, 1953
and region Upper Ordovician (Ordovician)

Class	Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps	44 165 400	Families Genera Species	Taxom
Order	Beyrichicopida Pokorny, 1954	19 61 147	Families Genera Species	Taxom
Suborder	Palaeocopa Henningsmoen, 1953	13 47 101	Families Genera Species	Taxom
Superfamily	Hollinacea Swartz, 1936	4 27 67	Families Genera Species	Taxom
Family	Tetradellidae Swartz, 1936	15 43	Genera Species	Taxom
Subfamily	Sigmoopsinae Henningsmoen, 1953	3 3	Genera Species	Taxom

Genera for Upper Ordovician
3 Genera with 3 Species

Species list for Upper Ordovician
3 Species