Fern Fossils
By PaleoScene www.paleo.cc

Glen J. Kuban
4726 Grayton Rd
Cleveland, OH 44135
Phone 832-647-7933
E-mail: gkpaleo@yahoo.com


Fossil Seed Ferns from central Pennsylvania

Llewellyn Formation, Pennsylvanian Period

The seed fern fossils shown here represent plants in an ancient bog over 300 million years ago--long before dinosaurs roamed the earth. They are the type of plants that compressed into coal over time. The site from which these fossils were collected is the only area in the world where the fossils show dramatic white to yellow-orange colors, as opposed to brown or black compressions at other sites. The colors are entirely natural--the result of a unique preservational environment. The plants lived in a swampy, oxygen poor habitat. When they died, a combination of low temperature, pressure, and oxygen allowed the plant tissues to be replaced by pyrite (iron sulphides). Pyrophyllite (aluminum silicate, a whitish mineral) is believed to have replaced the pyrite later, as the sediments piled up and the temperature and pressure increased. The yellow and orange colors are caused by iron oxide residues. Several different plant species are found at the site; the most common are seed ferns called Alethopteris, Neuropteris, Pecopteris, and Sphenophyllum, with Alethopteris by far the most common.

(Click on images for larger views)


Front
Back 		ID: F07
Alethopteris

$14.00


Front
Back 		ID: F09
Alethopteris, Neuropteris and bark

$22.00

ID: F14
Alethopteris and Neuropteris

$15.00


Front
Back 		ID: F15 Alethopteris
and a few Neuropteris leaves

$16.00

NOTE: Only one half of this specimen is now available (the left half)


Front
Back 		ID: F17 Alethopteris and stems

$20.00

ID: F18 Mostly Alethopteris

$20.00

NEW August 2009


Front
Back

ID: F08-40

Alethopteris (and one Neuropteris frond on back)

$20.00

ID: F08-42

Alethopteris and Neuropteris

$7.00

ID: F08-43

Alethopteris

$6.00


Front
Back

ID: F08-44

Alethopteris and Neuropteris

$10.00


Front
Back

ID: F08-45

Alethopteris and stems

$11.00

ID: F09-1

Alethopteris and Neuropteris

$16.00

ID: F09-2

Alethopteris and stems

$20.00

ID: F09-3

Alethopteris, stems,
and large individual Neuropteris leaflets

$32.00

ID: F09-4

Alethopteris and Neuropteris

$55

ID: F09-5

Mostly Alethopteris with a few Neuropteris and stem pieces

$48.00

ID: F09-6

Mostly Alethopteris

$20.00


Front
Back

ID: F09-7
Alethopteris and Neuropteris

$16.00


Front
Back

ID: F09-8
Mostly Alethopteris

$16.00


Front
Back

ID: F09-9
Alethopteris, Neuropteris and bark

$17.00


Front
Back

ID: F09-10
Alethopteris and a few Neuropteris pieces

$25.00


Front
Back

ID: F09-11
Alethopteris and Neuropteris

$25.00

ID: F09-12

Alethopteris and stem

$10.00


Front
Back

ID: F09-13
Mostly Alethopteris

$ 13.00


Front
Back

ID: F09-14
Alethopteris and Neuropteris

$ 12.00


Front
Back

ID: F09-15
Alethopteris, a few Neuropteris fronds and some Sphenophyllum on back

$ 12.00

ID: F09-16, 17, 18

F0-16 and F0-17: Alethopteris
F0-18: Alethopteris and Neuropteris

$4.50 each or
12.00 for all three plates


Front
Back

ID: F09-19
Mostly Alethopteris and stems and one cute little Pecopteris front in the center

$33.00

ID: F09-20

Mostly Alethopteris

$30.00

 F09-21: Alethopteris and Neuropteris
F09-22: Alethopteris and branch (Matched pair!)
F09-23: Alethopteris (Matched pair!)

$ 7.00 each
or $18.00 for emtire set of 5 plates


Front
Back

ID: F09-24
Alethopteris and Neuropteris
- with partial matching counterpart

$ 28.00 for pair


Front
Back

ID: F09-25
Alethopteris and Neuropteris
with stems and branches on back

$ 17.00

ID: F09-26

Alethopteris and large Neuropteris

$11.00


Front
Back

ID: F09-27
Alethopteris and some Neuropteris on back

$9.00

ID: F09-28

Alethopteris and Neuropteris

$14.00

ID: F09-29

Alethopteris and Neuropteris

$16.00

ID: F09-30

Alethopteris, Neuropteris, and Pecopteris

$15.00


Read more about: alethopteris and neuropteris
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