# Ordovician to Silurian graptolite specimen images for global correlation and shale gas exploration

> Research article (2021) · cited 12× · AI/ML

**Wikidata**: [openalex:W3214486789](https://www.wikidata.org/wiki/openalex:W3214486789)  
**Source**: https://4ort.xyz/entity/ordovician-to-silurian-graptolite-specimen-images-for-global-correlation-and-shale-gas-exploration