A fair use statement regarding the full text of the request

Your requested [Protaitzehoia Yang三叶虫分类位置的再研究—答“也论Protaitzehoia Yang三叶虫的分类位置”] is currently limited to Nanjing Institute of Geology and Palaeonotology, Chinese Academy of Sciences internal sharing.

To solicit author authorization, you need to provide the following information: name, organization, personal e-mail, reason for request. The information you provide will be reviewed and you are committed to the truth of the information provided. The personal information you provide will be protected according to law.

Protaitzehoia Yang三叶虫分类位置的再研究—答“也论Protaitzehoia Yang三叶虫的分类位置”

You agree and are willing to abide by the above requirements.