English English straight, sinuous, catenary, linguoid, and lunate http://en.wikipedia.org/wiki/Ripple_marks English English English fossil ripples Ripple marks English fossil ripples English English English fossil ripples English straight, sinuous, catenary, linguoid, and lunate climbing ripple ripple marks English English English English English English English English English English English Ripple marks fossil ripples English English English English ripple marks English http://en.wikipedia.org/wiki/Ripple_marks English English English ripple marks English English English