atdabanian

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 10
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 1
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 8
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 14
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 66
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 61
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 67
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 59
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 65
by James St. John

Oak Springs Trilobite Site, U.S. Route 93 Near Caliente, Nevada
by Ken Lund

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 69
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 71
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 64
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 58
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 52
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 53
by James St. John

Phosphatic pebble bed (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia)
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 56
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 62
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 8
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 15
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 70
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 57
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 4
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 6
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 54
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 3
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 12
by James St. John

Oncolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 4
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 14
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 13
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 13
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 2
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 11
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 7
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 12
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 4
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 10
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 8
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 9
by James St. John

Oncolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 2
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 2
by James St. John

Sellick Hill Formation (Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 2
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 11
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 7
by James St. John

Oncolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 1
by James St. John

Archaeocyathan limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 2
by James St. John

Trace fossils (Sellick Hill Formation, Lower Cambrian; Myponga Beach West, Fleurieu Peninsula, South Australia) 1
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 5
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 3
by James St. John

Archaeocyathan limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 1
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 1
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 7
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 2
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 18
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Mt. Scott Range, South Australia) 9
by James St. John

Limestone with apparent fenestral fabric (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia)
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 9
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 8
by James St. John

Stromatolitic limestone (Wirrapowie Limestone, Lower Cambrian; Mernmerna railroad bridge dry creek cut, South Australia) 4
by James St. John