Stratigraphy
The Wheeler Shale spans the Ptychagnostus atavus and uppermost-Middle Cambrian Bolaspidella trilobite zones (See House Range) for full stratigraphy).
Read more about this topic: Wheeler Shale
Stratigraphy
The Wheeler Shale spans the Ptychagnostus atavus and uppermost-Middle Cambrian Bolaspidella trilobite zones (See House Range) for full stratigraphy).
Read more about this topic: Wheeler Shale