Wikimedi'Òc

Grypania spiralis.JPG - Peter coxhead

Grypania spiralis, Empire Mine near Ishpeming MI.jpg - Tillman

Grypania spiralis (Negaunee Iron-Formation, Paleoproterozoic, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 46 (22133364328).jpg - Rudolphous

Grypania spiralis (Negaunee Iron-Formation, Paleoproterozoic, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 52 (41083014502).jpg - Rudolphous

Grypania spiralis (Greyson Shale, Mesoproterozoic, 1454-1468 Ma; western flanks of the Big Belt Mountains, Montana, USA) 2.jpg - Ser Amantio di Nicolao

Grypania spiralis (Greyson Shale, Mesoproterozoic, 1454-1468 Ma; western flanks of the Big Belt Mountains, Montana, USA) 3.jpg - Ser Amantio di Nicolao

Grypania spiralis (Greyson Shale, Mesoproterozoic, 1454-1468 Ma; western flanks of the Big Belt Mountains, Montana, USA) 1.jpg - Ser Amantio di Nicolao

Grypania FMNH.jpg - Morosaurus millenii