Some Cambrian Rocks
Zhongyicun Member of the Zhujiaqing Formation - fossiliferous peloidal phosphorite (lower Meishucunian Stage, lower Lower Cambrian) from near Ercaicun, Yunnan Province, China.
Dreamer's Hope Carbonatite - carbonatite (late Early Cambrian, ~524 Ma) from Road Gulch, Colorado, USA.
Echo Shale Member of the Carrara Formation - fossiliferous greenish mudrock (upper Dyeran Stage, upper Lower Cambrian) with olenelloid trilobite cephalon from Emigrant Pass West, southern California, USA.
Umberumberka Lode - 510-520 Ma (late Early Cambrian to early Middle Cambrian) argentiferous galena hydrothermal vein intruding Willyama Supergroup tourmalinite from the Umberumberka Mine, New South Wales, Australia.
Little Port Complex - Middle Cambrian (505 Ma) chromitic serpentinite with cumulate texture (left) & dunite with wehrlite and clinopyroxenite (right) from the Lewis Hills, Newfoundland, Canada.
Burgess Shale Formation, "Ogygopsis Beds" - fossiliferous, calcareous mudshale with Ogygopsis klotzi trilobite (lower Marjuman Stage, middle Middle Cambrian) at Mt. Stephen, near Field, British Columbia, Canada.
Burgess Shale Formation, Walcott Quarry Member - fossiliferous mudshales with Anomalocaris canadensis grasping claw (left) and mouthpiece (center) & Eldonia ludwigi (right) (lower Marjuman Stage, middle Middle Cambrian) from the Walcott Quarry, near Field, British Columbia, Canada.
Burgess Shale Formation, Walcott Quarry Member - fossiliferous mudshales with Marrella splendens (left) & Naraoia compacta (center & right) (lower Marjuman Stage, middle Middle Cambrian) from the Walcott Quarry, near Field, British Columbia, Canada.
Jince Formation - fossiliferous mudrocks with Paradoxides minor trilobite (left) & Ellipsocephalus hoffii trilobites (right) from the upper Middle Cambrian of the Jince area, Bohemia.
Wheeler Formation - fossiliferous mudshales with Peronopsis interstricta agnostoid trilobites (left & center) & Chancelloria eros coeloscleritophoran skeleton (Marjuman Stage, upper Middle Cambrian) from the House Range, Utah, USA.
Alum Shale Formation - petroliferous fossiliferous packstone with Agnostus pisiformis agnostoid trilobites (upper Middle Cambrian) from Andrarum, Sweden.
Big Horse Limestone Member of the Orr Formation - fossiliferous limestone (near-uppermost Marjuman Stage, ~uppermost Middle Cambrian) from Little Horse Canyon, Utah, USA.
Kushan Formation - fossiliferous limestone with Drepanura trilobites from the ~uppermost Middle Cambrian in Shandong Province, China.
Antietam Formation - quartzose sandstone with Skolithos burrows from the Upper Cambrian in the Antietam area, Maryland, USA.
Eau Claire Formation - quartzose sandstone with abundant polymeroid trilobite sclerites from the Upper Cambrian at Little Falls Dam, Wisconsin, USA.