Bivalves
bivalves — pre-owned
Browse 295 bivalves — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
6 Lb+ Marine Fossil Hash Bivalve - Edwards Plateau Texas Fossiliferous
Natural fossil-bearing marine sedimentary rock. Weighs in at 6 lb. 1 oz. Dimensions are 7" x 6.5" with 3.75” height. Shell-rich fossiliferous limestone with multiple visible shell cross sections and shell molds in the matrix. The largest exposed section appears to be a thick bivalve shell, possibly rudist-type, with additional smaller shell fragments visible on several sides. Chert and quartz / calcite are present. Surface is natural and unpolished. Combined shipping welcomed. Depends on exact items due to size / weight variances but if combined costs me nothing more in shipping, it costs you nothing more either! Thanks and please let me know if you have any questions!
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $10.00
Bivalve Fossil Shell Specimen, Clam/Oyster Bivalve Shell Fossil Specimen
Two Greek Trade Weights /Projectile.( Lead) Greek Character/Symbols decorate Each piece $299.00 each 2 for $450.00
Low Grade 304ct. Opalized Clam Shell
as you can see in the photos this thing is a little rough but it is still absolutely gorgeous and one of my favorites in my collection. Plus you absolutely cant beat it for the price you will pay. my loss is your gain.
Lot 16 Small Fossils from Denton Clay Formation Denton Texas
I do not know the specific identification of these fossils. You get all the fossils shown. Fossil Shell lot of 16.
Exogyra Bivalve Fossil Prehistoric Cretaceous Devils Toe Nail Eutaw Formation
The Exogyra Bivalve Fossil is a unique and prehistoric collectible from the Cretaceous period, specifically found in the Eutaw Formation. This fossilized mollusk, known as a Devils Toe Nail, showcases the intricate beauty and history of ancient oceans. Perfect for collectors of rocks, fossils, and minerals, this bivalve fossil offers a glimpse into the past and a fascinating addition to any collection.
Fossilized 2.5 Inch Madagascar Clam. Polished.
This is a polished fossilized clam from Madagascar. It was purchased from Gibson’s Gallery in Colorado Springs.
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $4.00
Cretaceous and jurassic shell fossils From Utah
Cretaceous and jurassic fossil shells from utah
Large Multi Fossil Shell Plate Matrix Display Specimen 7” w/ Stand
This is an excellent collector’s display piece for fossil enthusiasts, classrooms, offices, or natural history collections. It was photographed both dry and lightly wetted to show the fossil detail under different lighting conditions.
Early Cretaceous Bivalve Fossil Shell from Denton Clay Formation Denton Texas #5
Bivalve Fossil Shell #5. I do not know the specific identification of this fossil. You get the fossil shown.
Rucks Pit, Fort Drum FL, Fossilized Clam, Mercenaria Permagna, Calcite Crystals
The product is a rare and well-preserved fossilized clam, specifically a Mercenaria Permagna, with intricate calcite crystals. This unique piece is a valuable collectible for enthusiasts of rocks, fossils, and minerals, particularly those interested in mollusks and bivalves. Rucks Pit, known for its rich fossil deposits, is likely the source of this remarkable find, making it a prized addition to any collection of natural history artifacts.
You save $62.50
Bivalve Fossil Shell Specimen, Gray Natural Rock Fossil Shell Specimen
The Bivalve Fossil Shell Specimen is a unique and collectible item showcasing a gray natural rock fossil shell that has been preserved over time. This specimen is a piece of history, offering valuable insights into the geological past and the evolution of mollusks. With intricate details and a distinct shape, this shell serves as a fascinating addition to any collection of fossils, rocks, or minerals. Its natural beauty and historical significance make it a sought-after piece for enthusiasts and collectors alike. 4' Wide.
LARGE 5.9” FOSSIL CHESAPECTEN SCALLOP Seashell VA megalodon era, GREAT CONDITION
This product is a very rare and impressive 5.9" Chesapeakepecten Scallop seashell from the Megalodon era. This fossil bivalve is highly sought after by collectors and enthusiasts of marine fossils. The intricate details and size of this piece make it a standout addition to any collection of mollusk fossils. Great for collectors, beach houses, perfect for use as a display. Fast free shipping! B13
RARE ENCRUSTED FOSSIL 4” Fossil Chesepectan Scallop Seashell VA megalodon era
This product is a very rare fossil scallop with a fossilized specimen inside. Impressive 4" Chesapeakepecten Scallop seashell from the Megalodon era. This fossil is truely unique, it’s very rare to have an encrusted fossil within a fossil scallop, this one in particular could be a pearl like growth that connected over time or a small tube work that connected after this fossils death. The intricate details of this piece make it a standout addition to any collection of fossils. Great for collectors! Fast free shipping! Don’t miss out on such a unique find! B21
Bivalve Mollusc Fossil
See photos. ✈️ 𝘈𝘓𝘞𝘈𝘠𝘚 𝘖𝘗𝘌𝘕 𝘛𝘖 R͟E͟A͟S͟O͟N͟A͟B͟L͟E͟ 𝘖𝘍𝘍𝘌𝘙𝘚 .
You save $2.25
Fossil Clam Shell In Matrix Natural Specimen Display Rock
Fossil Clam Shell In Matrix Natural Specimen Display Rock Height:3.25” Width:3.5” Depth:1 3/4” Natural fossil specimen. The fossil shell exhibits visible cracks, openings, and losses consistent with age, fossilization, and natural geological processes. Matrix rock shows natural pits, cavities, and surface irregularities. No repairs were noted. Please review all photographs carefully as they are part of the description.
LARGE 100 Carat Opalized Fossil Clam Shells In Matrix! All Natural! Nice Color!
This is a nice 100ct section of natural opalized shells in a rock matrix. It is in excellent condition. You can trust this source and feel confident in knowing exactly what you are purchasing. We strive to bring you the most genuine and rare collectibles in the world.
Fossil Scallop Seashell Megalodon Era ~ Great Condition
This fossil bivalve is highly sought after by collectors and enthusiasts of marine fossils. Great condition, see photos.
Early Cretaceous Bivalve Fossil Shell from Denton Clay Formation Denton Texas #4
Bivalve Fossil Shell #4. I do not know the specific identification of this fossil. You get the fossil shown.
Large Fossil Hematite Clam Cluster
Large clam cluster fossil replaced with hematite
Bivalve Shell Fossil Exogyra Ponderosa Internal Mold Eutaw Formation Cretaceous
The product is a fossilized internal mold of the Bivalve Shell Exogyra Ponderosa from the Eutaw Formation of the Cretaceous period. This unique collectible item showcases the intricate details of a prehistoric mollusk, perfect for enthusiasts of rocks, fossils, and minerals. With its history and geological significance, this fossilized shell offers a glimpse into the ancient marine ecosystems of the past.
Exogyra Fossil Devils Toenail Shell Cretaceous Era Bivalve Ponderosa
Exogyra fossils found in Texas are Cretaceous-era (65–100 million years old) marine oyster fossils, often nicknamed "devil’s toenails," found in areas like Austin, the Sulphur River, and the Austin Chalk formation. These thick, curved, or twisted shells (commonly Exogyra ponderosa or costata) represent an era when Texas was a shallow sea.
Exogyra Fossil Devils Toenail Shell Cretaceous Era Bivalve Ponderosa
Exogyra found in south central Texas. Exogyra is an extinct genus of fossil marine oysters from the Jurassic and Cretaceous periods, known for their thick, spirally twisted shells that were cemented to solid surfaces. They are characterized by a large, cupped left valve and a smaller, flatter right valve, with a distinctive curled beak. These filter-feeding mollusks formed large oyster beds and are common fossils, sometimes called "honeycomb oysters" due to the porous texture of their shells.
Early Cretaceous Bivalve Fossil Shell from Denton Clay Formation Denton Texas #1
Bivalve Fossil Shell #1. I do not know the specific identification of this fossil. You get the fossil shown.
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $1.80
Large Bivalve Eutaw Formation Exogyra Late Cretaceous Period "Devils Toe Nail"
The product is a large bivalve mollusk fossil from the Late Cretaceous period, specifically from the Eutaw Formation. It is commonly known as the "Devils Toe Nail" due to its distinctive shape. This fossil would be a valuable addition to any collection of rocks, fossils, and minerals, especially for those interested in mollusk and bivalve fossils. It holds historical and scientific significance, providing a glimpse into the ancient marine ecosystems of the Cretaceous period.
Fossilized Scallop-3 1/4"- Chesapecten nefrens-Miocene- Calvert Cliffs, Maryland
113mm Large Fossilized Bivalve Clam Shell Mineralized Natural Display Specimen
Large Fossilized Bivalve Clam Shell. Natural fossilized bivalve clam shell. Its large size makes it an outstanding display piece for fossil collections, coastal décor, curiosity cabinets, educational displays, or natural history enthusiasts.
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $14.00
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $10.00
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $18.00
➤ 2-1/4" MOLLUSK FOSSIL - Vulcan Materials Quarry - Francesville IN VIDEO ➤143
LOCATION:- VULCAN MATERIALS QUARRY - FRANCESVILLE INDIANA.
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $2.60
Clam Fossil Specimen from Texas, Very Old Nice Textures - 6 oz, 2.5"
GIANT 8.5” FOSSIL CHESAPECTEN SCALLOP Seashell VA megalodon era, GREAT CONDITION
This product is a very rare and impressive 8.5" Chesapeakepecten Scallop seashell from the Megalodon era. This fossil bivalve is highly sought after by collectors and enthusiasts of marine fossils. The intricate details and size of this piece make it a standout addition to any collection of mollusk fossils. Great for collectors, beach houses, perfect for all fossil enjoyers! This is the largest fossil scallop I have ever found! Definitely museum quality, a specimen of this size in this condition is near an impossibility. Fast Free Shipping! B12
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $2.00
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $26.00
Bivalve Clam Steinkern Fossil Turtle Head Cucullaea Recendens False Ark Shell
Ruck's Pit Calcite Clam Fossil - Mercenaria permagna - Ft. Drum, Florida
A Ruck's Pit Calcite Crystal Clam from Fort Drum, Florida. These are the only place in the world in which these specific Calcite Clams are from, and represent a Pleistocene Lake Okeechobee! Locality: Ruck's Pit, Fort Drum, Florida.
You save $14.00