Big rare unknown arthropod in Mazon Creek like nodule half from Europe

Description

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Specimen:
Big , rare unknown arthropod fossil preserved in Mazon Creek like siderite nodule half from Europe
Locality:
Europe, a
ll detailed data will be provided with the specimen
Stratigraphy:
Upper Carboniferous,
Westphalian A,
Age:
ca. 314 Mya
Nodule size :
ca. 3,7 x 2,5 x 0,9 cm  !
Euproops is 1,5 cm long
Description:
Big , rare unknown arthropod in Mazon Creek like nodule half from Europe