# The fossils of the Rhenish strata system in Nassau

> publication by Guido Sandberger and Fridolin Sandberger (1850-1855)

**Wikidata**: [Q61248730](https://www.wikidata.org/wiki/Q61248730)  
**Source**: https://4ort.xyz/entity/the-fossils-of-the-rhenish-strata-system-in-nassau