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Gunflint Chert (GIS21)
Notes specific to this specimen: One of the most colorful pieces so far – incredible piece! Multiple very clear stromatolite colonies throughout the specimen. All the more impressive because it’s from the world-famous Gunflint Iron Formation. This piece is from our original discovery in 2025. Beautiful deep red colonies, surrounded by pink and yellow and white with natural black halos. Unlike anything we’ve ever seen. Polished with brilliant shine on front face only. Back and edges are naturally rough.
SIZE: 5″ X 2.5″ X 2.5″
Name: Collenia sp. (possible new species)
Age: Anamikean / Paleoproterozoic – 1.88 billion years
Unit: Gunflint Iron Formation
Site: Ontario, Canada
Date: 2025Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$885.00Gunflint Chert (GIS21)
$885.00 -
Grypania Spiralis (GRY8)
Notes specific to this specimen: Nice slab showing several clear segments of Grypania, a couple with the classic full circles and others with curving arc formed by this species. A couple of the segments – like the circle in the lower middle – show 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: 1.5″ x 2″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan$950.00Grypania Spiralis (GRY8)
$950.00 -
North American Rift (RIFT5)
Notes specific to this specimen: Incredible find! You can just about feel the rock ripping apart – a very dynamic piece. One of the best we’ve seen. Beautiful citrine and smoky quartz infilling in these graphic fractures of jet-black Rove Formation. Cut front face is polished. This specimen is a “stand-up” with a cut flat bottom allowing it to sit upright to show off the display face. Back is naturally rough.
SIZE: 5″x 6″x 2″
Minerals: White Quartz, Citrine, Fluorite
Age: Mesoproterozoic Era – 1.1 billion years
Unit: Rove Formation
Site: Cerdito Prospect, Thunder Bay, Ontario, Canada
Collected: 2025
By: Jon & JulieDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$1,425.00North American Rift (RIFT5)
$1,425.00 -
St Clair Flora – rare preservation (F6)
Notes specific to this specimen: Two sided specimen – front and back are equally compelling with a dense accumulation of ferns. An attractive and informative display card accompanies the specimen.
NAME: Alethopteris
AGE: Carboniferous Period – 305 million years
UNIT: Llewellyn Formation
SITE: Schuylkill County, PennsylvaniaSize: 18″ x 14″ x 1″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$1,450.00St Clair Flora – rare preservation (F6)
$1,450.00 -
Grypania Spiralis (GRY7)
Notes specific to this specimen: This piece shows clear segments of Grypania, a couple with the classic curving arc formed by this species. The most notable, however, is the clear “squiggly” segment in the top left. It is a perfect example of what’s been described as “desiccation” of the outer sheath along its length, resulting in impingement of the sheath between individual cells. It doesn’t get any more graphic than this!
SIZE: 2″ x 3″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan$1,800.00Grypania Spiralis (GRY7)
$1,800.00 -
Grypania Spiralis (GRY10)
Notes specific to this specimen: This sizeable slab shows abundant evidence of fragmentary Grypania, although there are some longer pieces with the telltale arching strings. The impressions are numerous but not very apparent except under close inspection.
SIZE: 4″ x 6″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT : Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan$1,850.00Grypania Spiralis (GRY10)
$1,850.00 -
Giant Fossil Shark Tooth with Coral
Notes specific to this specimen: An incredible find! Beautiful huge megalodon shark tooth with soft coral attachment. This 5 1/2″ specimen was discovered in 2000 on the bottom of the ocean off North Carolina and has been kept as found. It was discovered by the greatest shark tooth hunter ever – the late, great, Vito Bertucci – aka “Megalodon Man”. Vito was from the East Coast and well known as the most active collector of giant shark teeth ever and the creator of the largest shark jaw ever assembled. He passed away in 2004 while diving for teeth in the Ogeechee River, Georgia. There is some stabilization in the root but nothing has been done to the tooth itself other than cleaning it. Care has been taken to conserve the piece intact. Even the purple color of the soft coral is preserved. We traded for this from a private collector.
Tooth Size: 5 1/2″
NAME: Otodus megalodon
AGE: Miocene Epoch, 15 million years
SITE: Atlantic Ocean, North Carolina
DATE: 2000Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$2,250.00Giant Fossil Shark Tooth with Coral
$2,250.00 -
Grypania Spiralis (GRY9)
Notes specific to this specimen: Nice slab showing several clear segments of Grypania, a couple with the classic full circles and others with curving arc formed by this species. A couple of the segments – like the circle in the lower middle – show 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: 3″ x 3″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan$2,600.00Grypania Spiralis (GRY9)
$2,600.00 -
Grypania Spiralis (GRY11)
Notes specific to this specimen: Nice hand-sized slab with several showy and very distinct Grypania strings, some of which have characteristic curvature and arcs. In addition, some of the specimens have desiccation distortion along the sheath.
SIZE: 5″ x 6″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT : Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan$2,800.00Grypania Spiralis (GRY11)
$2,800.00 -
Grypania Spiralis (GRY2)
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$6,500.00Grypania Spiralis (GRY2)
$6,500.00 -
Microbially Induced Sedimentary Structure (MISS01)
Notes specific to this specimen: Incredible specimen! This strange and unique material was discovered years ago when our associate Glen Rockers was visiting a small quarry in Oklahoma. He excavated half a dozen slabs before the quarry worked through the area and the layer was destroyed. Most of the specimens were donated to museums, including one we gave to the Smithsonian in 2024 and another to the Florida Museum of Natural History in 2025.
HOW THEY FORMED
This MISS structure formed when microbial mats, composed primarily of bacteria and algae, colonized the sandy sediments of a coastal environment approximately 305 million years ago. The microbes secreted sticky extracellular substances that bound sand grains together, stabilizing the sediment surface against currents and waves. As sediment accumulated, microbial growth, mat shrinkage, and interactions with moving water produced the complex ridges, wrinkles, and convoluted wavy patterns preserved in the rock. Burial beneath subsequent layers of sediment protected the structures from erosion. Over time, compaction and cementation transformed the sand into Hartshorne Sandstone, preserving this fossilized record of microbial activity in an ancient environment.SIZE: 28″ x 40″ x 1.5″
SHIPPING: If you cannot pick up the specimen in person, additional crating and shipping charges will apply. Please contact us for details.
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$6,800.00 -
Trilobite Tracks (TRX01)
Notes specific to this specimen: HOW THEY FORMED – This is the largest slab with trilobite tracks and traces ever to be found at this famous site and possibly the largest single specimen of trilobite tracks in the world. These trace fossils formed during the Mississippian Period, roughly 325 million years ago, when trilobites crawled across the soft sediment of an ancient marine seafloor. As they moved, their numerous legs scratched the soft sediment creating paired trails known as Cruziana. Look closely at the ripple patterns: You will see several places where a trilobite was crawling over a ripple crest, making clear tracks, but it then “floated” across a depression, leaving no trail at all. When it reconnected with a ripple crest on the other side, it once-again left a trail. Where a trilobite paused or burrowed shallowly into the sediment, it could leave a broader, bilobed impression called Rusophycus.
Fine sediment subsequently covered these traces, protecting them from currents and erosion. Burial and compaction gradually hardened the sediment into rock, preserving the impressions as natural casts or molds. Much later, uplift, erosion and quarrying exposed the bedding surface, revealing the intricate record of trilobite activity.
Size: 30″ x 40″ X 1.5″
Name / Species: Cruziana and Rusophycus
Age: Mississippian Period, 325 million years
Unit: Tar Springs Formation
Site: Branchville, Perry County, Indiana
Collected: 1992
Collected by: Glen Rockers, PaleoSearchDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
NOTE: Pickup is available for this specimen. If shipping is required, you will be charged for crating the specimen.
$9,600.00Trilobite Tracks (TRX01)
$9,600.00
