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Trilobite Skreiaspis spinosa – Rejkovice, CZ

Locality: Rejkovice, Czech republic
Weight: 41,2g and 9,3g
Dimensions: 5,3 x 5,2 x 1,8 cm and 5,7 x 1,7 x 1 cm
Age: Cambrian (500 million years)
Positive and negative