Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
| www.biodiversitylibrary.org
Transcription
Logan Keokuk 100-
Burlington 150
Blackhand Kinderhook 50-
6.0
Cuyahoga Wausky 40}
Beria 200- 240-
smoking at face 400} 440
upper
Beria grit Ches 50-
Bedford shale ing 60
50
{Cleveland shale, 50
{Erie shale Typical 100
Hurm shale Inner clennings