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Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

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500 x 333
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 394
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 320
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 342
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 333
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 333
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 439
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 351
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Field Museum of Natural History, Chicago,...

Attribution License

500 x 375
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 285
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 305
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 302
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

375 x 500
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 339
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

431 x 500
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 375
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 368
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 285
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 282
Flickr

Grypania spiralis from the Negaunee Iron-Formation (Paleoproterozoic, 2.11 Ga or 1.874 Ga) at the Empire Mine southeast of Ishpeming in Marquette County, Upper Peninsula of Michigan, USA.  (public display, Cliffs Shaft Iron Mine & Museum, ...

Attribution License

500 x 375
Flickr

 
 

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