The tough-walled nuts fossilize well and can usually be distinguished by their • similarity to a walnut with one end more pointed, generally flat and angular sides, and four lengthwise grooves or narrow, wing-like extensions
The tough-walled nuts fossilize well and can usually be distinguished by their • similarity to a walnut with one end more pointed, generally flat and angular sides, and four lengthwise grooves or narrow, wing-like extensions