A Baculite in Nodule from the Pierre Shale Formation

Baculites sp. Mesozoic Era, Cretaceous Period, 145 million years ago Pierre Shale Formation, Custer County, South Dakota specimen length 13 in. Still has lots of good nacre and suture pattern. Provena

Baculite Cluster. Restored as found in the nodule. Pierre Shale Frm., Cretaceous, 65 MYA. Pennington Co. SD A Bold display piece

Placenticeras sp. Mesozoic Era, Cretaceous Period, 145 million years ago Pierre Shale Formation, Custer County, South Dakota nodule length 14 in. Prepared so that the Ammonite is removable from the co

**Originally Listed At $650** Ancient Seas, North America, South Dakota, Pennington County, Cheyenne River, Pierre Shale Formation, Cretaceous Period, ca. 83.6 to 72.1 million years ago. A collection

Sphenodiscus sp. Mesozoic Era, Upper Cretaceous Period, 100.5 million years ago Pierre Shale Formation, Pennington County, South Dakota length 13.5 in. Provenance from the Steve Dowell Collection,

Oxybeloceras meekanum Mesozoic Era, Cretaceous Period, 145 million years ago Pierre Shale Formation, Custer County, South Dakota specimen height 5 in. x length 5.75 in. Provenance found and prepared b

North America, United States, South Dakota, Pennington County, Cheyenne River, Pierre Shale Formation, Lower Cretaceous, 100.5 to 66 million years ago. A superb, fossilized ammonite of the Placenticer

RARE Tylosaurus tail. Pierre Shale frm., Cretaceous 65 Million Years Ago (MYA). Prepared, as found by Ron Ruschman and in the same surrounding matrix. In a panel mount that displays nicely whether on

13" x 10" Clam/bivalve, Pierre Shale, near Rapid City SD

Mosasaur vertebrae. Pierre Shale, Cretaceous 65 MYA Perkins Co., SD

Western Europe, Stuttgart, Germany, Holzmaden Black Shale Formation, Jurassic period, ca. 200 million years ago. A gorgeous and large ammonite shell within a large stone slab that not only fossilized

Ancient Seas, North America, Ohio & New York, Rochester Shale Formation, Ordovician to Lower Silurian, ca. 425 million years ago. A great collection of trilobite fossils within 4 stone matrices. These

Ancient Seas, North America, New York, Orleans County, Rochester Shale Formation, Lower Silurian, ca. 425 million years ago. This is a fine pair of fossilized trilobites within separate stone matrices

Fossil fern pairs (open nodules) Mazon Creek Formation, Illinois Pennsylvanian 300 MYO

Annularia radiata[nodule 1] Ptychocarpus unitus[nodule 2] Asterotheca miltoni[nodule 3] Neuropteris scheuchzeri[nodule 4] Paleozoic Era, Carboniferous Period, Pennsylvanian Sub Period, 318 million yea

Lower Cretaceous Period, 120 million years BP. A large fossil Tharriasararipes fish in a positive and negative nodule from the Santana formation, Albian, of Ceara, Araripe Plateau, Brasil. 4.1 kg tota

Pierre «chrysanthème» sur une base en bois 'Chrysanthemum Stone' on Wooden Base Permian Oixia Formation, Hunan, China Named for its unique flower-like patterns formed of calcite, celest

Italy/New York, 1973 screenprint 19 1/2" x 19 1/2" Untitled crossword print by Pierre Restany, making note of the date of formation of the New Realists [Thursday, October 27, 1960 the New Realists bec

Fossil Fish on Limestone Nodule Half , Brazilian Fossil Fish, Racocepis buccalis agassiz, Santana Formation of Serra de Armripe Mountains, Ceara Province, Lower Creraceous, Brazil. Over 60 Million yea

Jurassic Period, circa 180 million years B.P. Two halves of a fossil Dactylioceras sp. within a small shale pebble; held in a white card collector's tray. 123 grams total, 55-57 mm (2 1/8 - 2 1/4 in.)

ASSORTMENT OF NATURAL FORMATIONS INCLUDING CALCITEA palm-sized specimen of sandstone with embedded turritella shells, a large piece of shale irregularly formed in petaling, protruding flakes, a piece

Rhacolepsis. Santana Formation, Araripe Basin, Brazil, ca. Upper cretaceous (120 myo). A finely preserved specimen of rhacolepis complete in original matrix. No compositing or breaks in the nodule. Hu

Middle Jurassic, Dogger Formation, 174-163 million years BP. A large split nodule showing negative and positive aspects of multiple fossil fern leaves. 402 grams, 11.5cm (4 1/2"). Property of a North

Eocene Epoch, 56-49 million years BP. A group of six Knightia sp. fossil fish preserved in calcareous shale. See Grande, L. The paleontology of the Green River Formation, with a review of the fish fau