File:Haeckel Eurypterus tetragonophthalmus.jpg

Summary
Eurypterus Fischeri (Eichwald) = Eurypterus tetragonophthalmus (Fischer, 1839) / Baltoeurypterus tetragonophthalmus (Fischer, 1839), from above From the 47th plate from Ernst Haeckel's Kunstformen der Natur (1904).

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