opercula相关论文
As a zinc finger transcription factor,Sp7 is expressed specifically in osteoblasts.Because Sp7 knockout mice are emb......
文中系统描述了新疆乌什-阿克苏地区下寒武统玉尔吐斯组软舌螺口盖和口盖状化石5属7种,其中包括2新属3新种。Xystritheca的口盖具有复杂的锁骨构造,Pachytheca的......