Chinese writing 1000 years older than previously thought?

Professor Liu Fengjun at Shandong University has discovered Chinese inscriptions on bone, which if the dating is correct, would put the age of Chinese writing back 1000 years earlier than previously thought. The writing dates from the Longshan Culture which existed from 2800 to 2300 BCE. This would pre-date the Yinxu inscriptions which came from the Shang dynasty of the 2nd millennium BCE.

Not everyone is convinced the marking are the work of man though, some are saying the marks could have been left by worms or tree roots.