4Fossil sites
Kalstad Limestone
Kalstad Limestone in Norway: 4 fossil sites. Typical age: 454–450 million years (Ordovician).
4Fossil sites
2Finds
454–450 million yearsTypical age
OrdovicianMain period
Where its fossils were found
Ordovician
By geological period
Ordovician4
What was found
Trilobites · 2Illaenus, Atractopyge
Towns with the most fossil sites nearby
Other formations of the same period
Ordovician
Valhallfonna Formation 118Elnes Formation 89Arnestad Formation 59Solvang Formation 57Husbergøya Formation 55Vollen Formation 51Furuberget Formation 50Tøyen Formation 37Langåra Formation 36Langøyene Formation 36Huk Formation 30Frognerkilen Formation 26Bønsnes Formation 20Kirtonryggen Formation 20Lunner Formation 19Nakholmen Formation 18Venstøp Formation 18Nakkholmen Formation 17Grimsøya Formation 16Skogerholmen Formation 16Bjørkåsholmen Formation 9Kalvsjøen Formation 8Gagnum Limestone 8Sørbakken Formation 7