There are currently (2023-04-07) 977 occurrence records in GBIF with typeStatus = holotype and basisOfRecord = HumanObservation.
The records I've checked fall into 2 classes:
- holotype occurrences based on preserved specimens
- occurrences of non-holotypes based on human observations
Finding these makes me wonder about how much "leakage" (or "cross-contamination") there is between basisOfRecord categories. Has anyone tried to quantify this?