The fossils at Dinosaur Cove are embedded in hard sandstones.恐龙峡谷中的化石都嵌在坚硬的砂岩中。Alternating sandstones and shales are regarded as important.蚀变的砂岩和页岩是很重要的.The coarsest sandstones intercalated with grey mudstones.最粗粒砂岩与灰色泥岩...