# János Pettkó

> Hungarian (Slovakian) geologist and palaeontologist (1812-1890)

**Wikidata**: [Q1234203](https://www.wikidata.org/wiki/Q1234203)  
**Source**: https://4ort.xyz/entity/j-nos-pettk-


## References

1. Integrated Authority File
2. [Source](https://library.hungaricana.hu/hu/view/PulszkyTarsMME_Konyvek_2002_MagyarMuzeumiArckepcsarnok/?pg=720)
3. International Fossil Plant Names Index
4. [Source](https://www.biographien.ac.at/oebl/oebl_P/Pettko_Jan_1812_1890.xml)
5. [Source](https://www.zobodat.at/personen.php?id=65753)