By: callanbentley
Image: Ron Schott
License: Creative Commons Non Commercial ⧉

Uploaded: 20 Aug 2026
Last Updated: 20 Aug 2026

536 megapixels
38,588 x 13,892 pixels
128.6 in X 46.3 in at 300dpi

The K/T boundary is marked by the sandy layer just below the coal seam, at the base of the sandstone.