1·Now we have recovered invertebrate fossils, such as bivalves, conchostracans, gastropods and ostracodes, in the dinosaurian egg-bearing strata.
本次研究在西峡盆地含恐龙蛋地层中首次发现了无脊椎动物化石,如双壳类、叶肢介、腹足类和介形类。
2·Predaceous gastropods reduced the abundance of herbivorous molluscs and sessile invertebrates.
肉食性腹足类减少了草食性软体动物和固着无脊椎动物的数量;