辽西是世界上罕见的化石宝库,近年来由于发现了大量古鸟类、带“毛”的恐龙、两栖类、早期哺乳动物及已知最早的被子植物而在全世界引起轰动。不过早期有几种脊椎动物化石是日本人发现和命名的,包括细小矢部龙、楔齿满洲鳄和满洲龟。满洲龟属直到1986年才有第二个种——发现于黑龙江鸡西市的东海满洲龟。1995年又有报道在辽西发现了辽西满洲龟。大家知道龟以其体质的特殊性和躯干包藏于骨质甲壳内而迥异于其它动物。龟鳖类甲壳分为背腹两部分,背面的叫背甲,腹面的叫腹甲。甲壳除次生退化外,一般分内外两层:外层是角质的,由许多盾片组成;内层是骨质的,由许多骨板组成。龟鳖类不仅脊柱与壳愈合,背甲也由骨板与肋骨愈合而成。与其它所有的脊椎动物不同,龟鳖类的肋骨位于肩带和腰带之 The western Liaoning Province is a rare fossil treasure house in the world. In recent years, it has caused great sensation in the world due to the discovery of a large number of ancient birds, dinosaurs, amphibians and amphibians with “Mao” and early earliest known angiosperms. However, there were several vertebrate fossils that the Japanese discovered and named in the early days, including the minnow, the wedge-tortoises, and the Manchurian turtles. The Manchurian tortoise did not have a second species until 1986 - the Turtle found in the East China Sea in Jixi, Heilongjiang. There are also reports in 1995 found in Liaoxi Manchuria turtle. We all know that turtles are different from other animals in their physical characteristics and their trunk is contained in the bone carapace. Turtle turtle shell is divided into two parts dorso-cauliflower, called the back of the back, ventral abdominal called. In addition to secondary degeneration carapace, the general points inside and outside the two layers: the outer layer is horny, composed of many shield pieces; the inner layer is bone, composed of many bone plate. Tortoises and turtles not only the spine and shell healing, carapace also formed by the plate and ribs healing. Unlike all other vertebrates, turtle ribs are located on straps and belts