| Graptolites from the lower Ordovician Palmetto Formation, Esmerialda County, Nevada. Photograph 1 shows two dendroid graptolites colonies. Image 2 reveals slender Clonograptus colonies. Photographs courtesy Dr. Ben Waggoner. |
| Graptolites from the lower Ordovician Palmetto Formation, Esmerialda County, Nevada. Photograph 1 shows two dendroid graptolites colonies. Image 2 reveals slender Clonograptus colonies. Photographs courtesy Dr. Ben Waggoner. |