Kimberella quadrata Wade, 1972
Ediacaran
Onega Island
Arkhangelsk
White sea region
Russia
Dorsal view according Micha L. Rieser (copyright holder, Wikipedia)
a: striae
b: crenellated zone
c: proximal ridge
d: distal ridge
e: anterior knoll
f: lobe
g: medial depressionor or midline ridge
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