References for Types
To enable referencing various types with certain established and defined as well as online published it would be necessary to link a certain type to this persistent identifier of the respective classification, eg. link the material iron to the WikiData iron entity or especially for anthropological classifications to the respective permanent online identifiers.
Example: link tuberculosis found in a skeleton to the ICD-10 classification (International Statistical Classification of Diseases and Related Health Problems) of the WHO (https://icd.who.int/browse10/2016/en#/A15-A19)
In addition it would also be very beneficial if not only external references but also bibliographical references could be linked to a type entity.