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Fossil Sand Dollar and Clam (KH24)
Notes specific to this specimen: An outstanding polished Dendraster sand dollar with showy natural petroleum staining and great color pattern, along with some unpolished Psuedocardium clams. All mounted on native matrix with a flat bottom ready to display. Comes with an attractive information card.
Size: 2″x4″x3″Â
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$110.00 -
Fossil Sand Dollar and Clam (KH23)
Notes specific to this specimen: An excellent large polished Dendraster sand dollar with great color pattern, along with some unpolished Psuedocardium clams, plus another sand dollar that is unpolished. Both sand dollars show very cool natural petroleum stains. All mounted on native matrix with a flat bottom ready to display. Comes with an attractive information card.
Size: 4″x5″x2″Â
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$165.00 -
Fossil Sand Dollar and Clam (KH22)
Notes specific to this specimen: A super-nice large polished Dendraster sand dollar with great color pattern, along with one polished Psuedocardium clam beside a really cool unpolished clam with gnarly original shell material. All mounted on native matrix with a flat bottom ready to display. Comes with an attractive information card.
Size: 3″x4″x2″Â
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$185.00 -
Fossil Sand Dollar and Clam (KH21)
Notes specific to this specimen: This fantastic piece has a super-nice large polished Dendraster sand dollar with great color pattern, along with a complete polished Psuedocardium clam, plus two unpolished Dendrasters. All mounted on native matrix with a flat bottom ready to display. Comes with an attractive information card.Â
Size: 4″x5″x3″Â
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$245.00 -
Fossil Sand Dollar and Clam (KH11)
Notes specific to this specimen: This fantastic piece is a super-nice large Dendraster sand dollar with a great color pattern that’s been influenced by natural petroleum which occurs in these deposits. Polished only on the top – back is rough.  Comes boxed with an attractive information card.
SIZE: 2″
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$55.00 -
Kona Dolomite (KONA36)
Notes specific to this specimen: We cut and polish these particular Kona Dolomite pieces to showcase the uniqueness of this material. Here the front is cut and polished. It sits upright on a flat base with a slight angle for optimal viewing. The back is left rough. Superb banding from the stromatolitic layers. Great conversation piece of one of the world’s oldest fossils.
SIZE: 5″ Long
NAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2025
BY: Jon Kramer & Julie MartinezDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$85.00Kona Dolomite (KONA36)
$85.00 -
Kona Dolomite (KONA35)
Notes specific to this specimen: We cut and polish these particular Kona Dolomite pieces to showcase the uniqueness of this material. Here the front is cut and polished. It sits upright on a flat base with a slight angle for optimal viewing. The back is left rough.  This piece has beautiful coloration.Great conversation piece of one of the world’s oldest fossils.
SIZE: 3″ High
NAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2025
BY: Jon Kramer & Julie MartinezDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$65.00Kona Dolomite (KONA35)
$65.00 -
Kona Dolomite (KONA34)
Notes specific to this specimen: We cut and polish these particular Kona Dolomite pieces to showcase the uniqueness of this material. Here the front is cut and polished. It sits upright on a flat base with a slight angle for optimal viewing. The back is left rough.  This piece has beautiful coloration.Great conversation piece of one of the world’s oldest fossils.
SIZE: 3″ High
NAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2025
BY: Jon Kramer & Julie MartinezDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$75.00Kona Dolomite (KONA34)
$75.00 -
Kona Dolomite (KONA33)
Notes specific to this specimen: We cut and polish these particular Kona Dolomite pieces to showcase the uniqueness of this material. Here the front is cut and polished. It sits upright on a flat base with a slight angle for optimal viewing. The back is left rough.  This piece has beautiful coloration.Great conversation piece of one of the world’s oldest fossils.
SIZE: 3″ HighNAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2025
BY: Jon Kramer & Julie MartinezDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$85.00Kona Dolomite (KONA33)
$85.00 -
Kona Dolomite (KONA32)
Notes specific to this specimen: We cut and polish these particular Kona Dolomite pieces to showcase the uniqueness of this material. Here the front is cut and polished. It sits upright on a flat base with a slight angle for optimal viewing. The back is left rough.  This piece has beautiful coloration.Great conversation piece of one of the world’s oldest fossils.
SIZE: 3″ HighNAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2025
BY: Jon Kramer & Julie MartinezDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$65.00Kona Dolomite (KONA32)
$65.00 -
Kona Dolomite (KONA31)
Notes specific to this specimen: We cut and polish these particular Kona Dolomite pieces to showcase the uniqueness of this material. Here the front is cut and polished. It sits upright on a flat base with a slight angle for optimal viewing. The back is left rough. This piece shows nice stromatolitic banding. There is some slight marring in the finish at the top.  Great conversation piece of one of the world’s oldest fossils.Â
SIZE: 2″ High
NAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2025
BY: Jon Kramer & Julie MartinezDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$35.00Kona Dolomite (KONA31)
$35.00 -
Kona Dolomite (KONA28)
Notes specific to this specimen: Some Kona Dolomite we have carved into various shapes to accentuate the colors and patterns. This obelisk shows lively color and great patterning that is present in the better pieces of this unique material. Polished on all sides, with a flat base so it stands up easily.
SIZE: 6″
NAME: Collenia kona
AGE: Paleoproterozoic Era 2.3 billion years
UNIT: Kona Formation
SITE: Kona Hills, Michigan
DATE: 2025
BY: Jon Kramer & Julie MartinezDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$130.00Kona Dolomite (KONA28)
$130.00
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