Grypania Spiralis (GRY2)
$6,500.00
Notes specific to this specimen: Nice cabinet specimen showing several nice segments of Grypania with the classic curving arc formed by this species. Some segments show great examples of what’s been described as “desiccation” of the outer sheath along its length. This results in impingement of the sheath between individual cells, giving it a “bumpy” appearance. The desiccated segments are very rare.
SIZE: 4″ x 5″ x 0.75″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan
Notes specific to this specimen: Nice cabinet specimen showing several nice segments of Grypania with the classic curving arc formed by this species. Some segments show great examples of what’s been described as “desiccation” of the outer sheath along its length. This results in impingement of the sheath between individual cells, giving it a “bumpy” appearance. The desiccated segments are very rare.
SIZE: 4″ x 5″ x 0.75″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
Additional information
| Name / Species | Grypania spiralis |
|---|---|
| Age | Paleoproterozoic Era / 2.1 billion years |
| Unit | Negaunee Iron Formation |
| Site | Empire Mine, Palmer, Michigan |
