古脊椎动物学 gǔjǐzhuīdòngwùxué vertebrate paleontology Definitions Defs Origin Strokes Stroke Words Sentences Sents 古脊椎动物学 古脊椎動物學 gǔjǐzhuīdòngwùxué vertebrate paleontology The study of fossil animals with backbones
古脊椎动物学 古脊椎動物學 gǔjǐzhuīdòngwùxué vertebrate paleontology The study of fossil animals with backbones
