cuspate

Same decorations,was it in earlier time for such cuspate scabbard tail?

相同纹饰，这种尖式鞘尾年代是否靠前？：）

Cuspate deltaic sands micro-facies, which formed at the time of powerful wave action, the continuity of marine distributary channel is bad, and distributes in cuspate shape. 3.

3、坨状三角洲砂体微相，形成时波浪作用很强，水下分流河道连续性较差，呈坨状分布。