James St. John:
Metatillite (Diamictite) (Gowganda Formation, 2.3 Ga; Licking River gravel bar, east of Newark, Ohio, USA) 1
James St. John:
Metatillite (Diamictite) (Gowganda Formation, 2.3 Ga; Licking River gravel bar, east of Newark, Ohio, USA) 2
James St. John:
BIF clast in pebbly, coarse-grained sandstone (Licking County gravel bar, Newark, Ohio, USA)
James St. John:
Pseudotrilobite (differentially weathered/eroded siltstone) (Licking River gravel bar, Licking County, Ohio, USA)