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Crystalized Welks (W2)
Notes specific to this specimen: Fossil welks are much rarer than the clams found at Rucks Pit and most of them have no crystals. But, when you do find a nice crystal-line specimen, there’s nothing like it in the world! This is a single welk with a natural opening on its dorsal (top) allowing you to see the crystal lining of the shell and the gray sparite “floor” that was the sediment which partially filled the shell after the animal had died. Very unusual.
SIZE: 4″
NAME: Mercenaria permagna
AGE: Pleistocene 2 million years
UNIT: Nashua Formation
SITE: Okeechobee County, FloridaDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$165.00Crystalized Welks (W2)
$165.00 -
Rainbow Stromatolite (RS1)
Notes specific to this specimen: This is one of the original discovery pieces, collected by us in August 2025. It is characteristic of all the variety of colors found in this site. We’ve never seen such a variety of colors of stromatolite from a single site. It reminded us of all the colors of Arizona petrified wood – known as “Rainbow Wood” – and this became the source for our naming this new discovery “Rainbow Stromatolite”.
SIZE: 2″x 4″x 1.5″
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.
$285.00Rainbow Stromatolite (RS1)
$285.00 -
Cerdito Prospect Rift Crystals (CP12)
Notes specific to this specimen: Nice light-purple amethyst vein running diagonally through this piece. Has great white quartz healed fracture veins on the side and another amethyst cavity in the back. There’s even a small one on the cut bottom! This piece has a flat bottom so it stands up and displays very nicely. Take a look at the bottom and you’ll see the very graphic splitting of the matrix and the subsequent infilling.
SIZE: 4″ x 4″ x 5″
Quartz – Amethyst, Smokey, Citrine, Clear
AGE: Mesoproterozoic Era – 1.1 billion years
UNIT: Rove Formation
SITE: Thunder Bay, Ontario, Canada
DATE: 2022Documentation: This authentic mineral specimen comes with a Certificate of Authenticity and Origin.
$460.00 -
Volcanic Bomb (EB4)
Notes specific to this specimen: Large classic plump fusiform bomb with great aerodynamic striations. It looks like it encountered another in flight but did not complete the merging with it. Natural breaks reveals chalcedony interior which fluoresces a vibrant green. A great specimen.
SIZE: 10″ x 5″ x 4″
NAME: Various forms
AGE: Pliocene Epoch- 5 million years
UNIT: Banbury Formation
SITE: Elko County, NevadaDATE: 2020
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$265.00Volcanic Bomb (EB4)
$265.00 -
Iron Stromatolites (ME3)
Notes specific to this specimen: Rare white colonies with dark banded growth rings. Some have branchings. Specimen found in 1990s at the old Mary Ellen Mine in Biwabik, Minnesota, the type locality for the Biwabik Iron Formation. Notice the silvery spots of concentrated iron between the colonies.
SIZE: 3″ x 5″ x .3″
Name: Collenia undosa
Unit: Biwabik Iron Formation
Site: Biwabik Iron Range, Minnesota
Date: Mid 1990sDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$365.00Iron Stromatolites (ME3)
$365.00 -
Trilobite (T9)
Notes specific to this specimen:
Super cool and rare! Two nice complete adult Elrathia with a partial between them. But look closely – there’s a complete baby Elrathia on the tail of the right adult! Did baby Elrathia trilobites hang on to the parent for a time?NAME: Elrathia kingii, Peronopsis and various other species
AGE: Cambrian Period, 505 million years
UNIT: Wheeler Shale Formation
SITE: Millard County, WyomingSize: 3″ x 4″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$225.00Trilobite (T9)
$225.00 -
Trilobite (T8)
Notes specific to this specimen:
Nice large Elrathia missing its freecheeks. Professionally prepared using air-abrade.NAME: Elrathia kingii, Peronopsis and various other species
AGE: Cambrian Period, 505 million years
UNIT: Wheeler Shale Formation
SITE: Millard County, WyomingSize: 3″ x 4″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$45.00Trilobite (T8)
$45.00 -
Trilobite (T7)
Notes specific to this specimen:
Four trilobites – Two complete Elrathia rightside up, one smaller upside down, and a small, broken Peronopsis nearbyNAME: Elrathia kingii, Peronopsis and various other species
AGE: Cambrian Period, 505 million years
UNIT: Wheeler Shale Formation
SITE: Millard County, WyomingSize: 4″ x 4″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$85.00Trilobite (T7)
$85.00 -
Trilobite (T6)
Notes specific to this specimen:
Cheek-to-Cheek Two excellent Elrathia professionally prepared using air-abrade.NAME: Elrathia kingii, Peronopsis and various other species
AGE: Cambrian Period, 505 million years
UNIT: Wheeler Shale Formation
SITE: Millard County, WyomingSize: 3″ x 4″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$85.00Trilobite (T6)
$85.00 -
Trilobite (T5)
Notes specific to this specimen:
DEATH FLOW specimen- Here is a very rare and unusual piece showing a complete Elrathia triloibite caught in the midst of the “Death Flow” megaspecimen we uncovered in 2004. You can see the mayhem that accompanied the mudslide- with hundreds of trilibites and trilobite parts both large and small, all mashed together surrounding it. The fact this one is intact and complete indicates the force of the slide was probably dissipating by the time it reached this spot. But it was buried and succumbed nonetheless. Professionally prepared using air-abrade. We found other specimens similar to this but they are already in museums.NAME: Elrathia kingii, Peronopsis and various other species
AGE: Cambrian Period, 505 million years
UNIT: Wheeler Shale Formation
SITE: Millard County, WyomingSize: 3″ x 3″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$425.00Trilobite (T5)
$425.00 -
Trilobite (T4)
Notes specific to this specimen:
Multiple Elrathia sections. Professionally prepared using air-abrade.NAME: Elrathia kingii, Peronopsis and various other species
AGE: Cambrian Period, 505 million years
UNIT: Wheeler Shale Formation
SITE: Millard County, WyomingSize: 2″ x 4″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$45.00Trilobite (T4)
$45.00 -
Trilobite (T3)
Notes specific to this specimen:
Nice large Elrathia missing its freecheeks. Professionally prepared using air-abrade.NAME: Elrathia kingii, Peronopsis and various other species
AGE: Cambrian Period, 505 million years
UNIT: Wheeler Shale Formation
SITE: Millard County, WyomingSize: 2″ x 4″
Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$45.00Trilobite (T3)
$45.00
