This is a "Czech Fossil Snail" of the species Praenatica gregaria from the classical site of Koneprusy. | |||
Location: | Koneprusy - Zlatý kun, Barrandium, Czech Republic | ||
Size Fossil: | about 19 x 14 mm | ||
Age: | Lower Devonian, Pragian, Koneprusy limestone (about. 412 mill. y.o.) |