Checklist for Infraclass Megoperculata Börner, 1902 and region Björke (Gävle, Gävleborg County, Sweden)
List of families for Björke 3 Families width 5 Species
Genera for Björke 4 Genera with 5 Species
Species list for Björke 5 Species
Subnodes of Megoperculata with occurrences in Björke
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