Sidneyia inexpectans in natural light Location: U.S. National Museum of Natural History, Washington, DC Year: 2008 Merckdigitals catalogue number: 09-53061 Comments: Middle Cambrian, Burgess Shale, BC

Sidneyia inexpectans in high contrast Location: U.S. National Museum of Natural History, Washington, DC Year: 2008 Merckdigitals catalogue number: 09-53061 Comments: Middle Cambrian, Burgess Shale, BC

Sidneyia inexpectans Location: U.S. National Museum of Natural History, Washington, DC Year: 2008 Merckdigitals catalogue number: 09-73405 Comments: Middle Cambrian, Burgess Shale, BC

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