Ptychagnostus sp., elrathia kingii wheeler shale
Bob Campbell Geology Museum Formation: Wheeler Shale.
Neodrepaneura premesnili, pygidia in matrix
Bob Campbell Geology Museum Formation: Kushan Formation.
Trilobite (Flexicalymene ouzregui)
Bob Campbell Geology Museum 445 million years old; Formation: Ktaoua Formation.
Trilobite (Dicranurus monstrosus)
Bob Campbell Geology Museum 380 million years old; Formation: Megrane Formation.
Flexicalymene meeki, isolated crinoid columnals, partial stems
Bob Campbell Geology Museum