21. The kings, in the order of succession derived from the oracle bones , are here grouped by generation. 22. Oracle script inscriptions on oracle bones unearthed at Yinxu alternatively record that he was the fifteenth Shang king. 23. Though innovative in many ways, he was skeptical of new archaeological findings, regarding the oracle bones as forgery. 24. In contrast, the earliest layers of the oracle bone characters, but the sample is too small for decipherment. 25. Historians have written evidence of Chinese mythological symbolism from the 12th century BC in the Oracle bone script. 26. Numerous oracle bones were discovered, most likely those of the miners, representative of their difficult and dangerous work. 27. At the same time, scholar Guo Ruoyu ( ��a ) was writing a book on the oracle bones . 28. A few, indicated below with their earliest forms, date back to oracle bones from the twelfth century BCE. 29. Fu Hao is known to modern scholars mainly from inscriptions on Shang dynasty oracle bone artifacts unearthed at Yinxu. 30. Until recently, such fragments were ground up and sold as medicinal " oracle bones " in traditional Chinese apothecaries.