Category:Ironstone concretions from the Borden Formation

Media in category "Ironstone concretions from the Borden Formation"

The following 4 files are in this category, out of 4 total.

• 
  Fossil brachiopods in ironstone concretion (Nancy Member, Borden Formation, Lower Mississippian; Lewis County, Kentucky, USA) 1 (35592646732).jpg 2,660 × 2,389; 3.39 MB
  
• 
  Fossil brachiopods in ironstone concretion (Nancy Member, Borden Formation, Lower Mississippian; Lewis County, Kentucky, USA) 2 (35374392580).jpg 2,622 × 2,502; 3.96 MB
  
• 
  Fossiliferous ironstone concretion (Nancy Member, Borden Formation, Lower Mississippian; Lewis County, Kentucky, USA) 1 (35592693062).jpg 3,046 × 2,435; 5.29 MB
  
• 
  Fossiliferous ironstone concretion (Nancy Member, Borden Formation, Lower Mississippian; Lewis County, Kentucky, USA) 2 (35592686962).jpg 3,513 × 2,505; 6.43 MB