Alethopteris
Photographed by Michael A. Klimetz
[Frond Impression in Siltstone]
Pennsylvanian
PENNSYLVANIA
Photographed by Michael A. Klimetz
Alethoperis serlii
[Frond Impressions in Shale]
Pennsylvanian
St. Clair
PENNSYLVANIA
Alethoperis decurrens
[Frond Impression in Siltstone]
Carboniferous-Westphalian
Upper Silesia
POLAND
Photographed by Michael A. Klimetz
Photographed by Michael P. Klimetz
Alethoperis serlii
[Pyrophyllitized Frond Impressions in Shale]
Pennsylvanian
St. Clair
PENNSYLVANIA
Photographed by Michael P. Klimetz
Alethoperis serlii
[Pyrophyllitized Frond Impressions in Shale]
Pennsylvanian
St. Clair
PENNSYLVANIA
Photographed by Michael P. Klimetz
Alethoperis grandini
Stranger Formation - Tonganoxie Sandstone Member
Pennsylvanian - Virgilian
Franklin County
KANSAS
Photographed by Michael P. Klimetz
Alethoperis grandini
Stranger Formation - Tonganoxie Sandstone Member
Pennsylvanian - Virgilian
Franklin County
KANSAS
Photographed by Michael P. Klimetz
Alethoperis grandini
Stranger Formation - Tonganoxie Sandstone Member
Pennsylvanian - Virgilian
Franklin County
KANSAS
Photographed by Michael P. Klimetz
Alethoperis grandini
Stranger Formation - Tonganoxie Sandstone Member
Pennsylvanian - Virgilian
Franklin County
KANSAS
Photographed by Michael P. Klimetz
Alethoperis grandini
Stranger Formation - Tonganoxie Sandstone Member
Pennsylvanian - Virgilian
Franklin County
KANSAS
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
Schyulkill County
PENNSYLVANIA
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
Schyulkill County
PENNSYLVANIA
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
Schyulkill County
PENNSYLVANIA
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
Schyulkill County
PENNSYLVANIA
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
Schyulkill County
PENNSYLVANIA
Collected by Michael A. Klimetz
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
St. Claire
Schyulkill County
PENNSYLVANIA
Collected by Michael A. Klimetz
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
St. Claire
Schyulkill County
PENNSYLVANIA
Collected by Michael A. Klimetz
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
St. Claire
Schyulkill County
PENNSYLVANIA
Collected by Michael A. Klimetz
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
St. Claire
Schyulkill County
PENNSYLVANIA
Collected by Michael A. Klimetz
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
St. Claire
Schyulkill County
PENNSYLVANIA
Collected by Michael A. Klimetz
Photographed by Michael P. Klimetz
Alethoperis serlii
Llewellyn Formation
Pennsylvanian
St. Claire
Schyulkill County
PENNSYLVANIA
Photographed by Michael P. Klimetz
Alethoperis decurrens
[Frond Impression in Siltstone]
Late Carboniferous
Joggins
Nova Scotia
CANADA
Photographed by Michael P. Klimetz
Alethoperis decurrens
[Frond Impression in Siltstone]
Late Carboniferous
Joggins
Nova Scotia
CANADA
Photographed by Michael P. Klimetz
Alethoperis decurrens
[Frond Impression in Siltstone]
Late Carboniferous
Joggins
Nova Scotia
CANADA
Photographed by Michael P. Klimetz
Alethoperis decurrens
[Frond Impression in Siltstone]
Late Carboniferous
Joggins
Nova Scotia
CANADA
Photographed by Michael P. Klimetz
Alethoperis missouriensis
[Frond Impression in Red Sandstone]
Pennsylvanian
Keota
Haskell County
OKLAHOMA
Photographed by Michael P. Klimetz
Alethoperis missouriensis
[Frond Impression in Red Sandstone]
Pennsylvanian
Keota
Haskell County
OKLAHOMA
