2 Fossilized Slabs of Ferns & Crinoids in Matrices

Ancient Seas & North America, United States, Pennsylvania, St. Clair, Carboniferous Period, ca. 358.9 to 298.9 million years old. A fascinating pair of slate matrices that contain fossilized ferns and

A Large fossil slab on stand, red-brown shale slab, fossilized fern material, on fitted brushed brass stand, 18 1/2"L x 15"H, 18 3/4"H in stand

Lot of 2 Fossilized Fern Leaves

**First Time At Auction** North America, Wyoming, Lower Eocene, ca. 40 million years ago; East Asia, China, Jurassic to Cretaceous, ca. 199.6 to 70 million years ago. A pair of fossilized extinct preh

Two fossilized orthoceras squid slabs, polished height 16.5 in. x width 9 in. x depth 2.5 in. Provenance: Property from the collection of a Hadley, Massachusetts gentleman Shipping available for th

**Originally Listed At $300** Ancient Seas, North America, Oklahoma, Bois D'Arc Formation, Devonian, ca. 419.2 to 358.9 million years ago; Eastern Europe, Russia, St. Petersburg, Wolchow River, Lower

A mythical animal affixed to a turquoise matrix slab. Dimensions: H 2" x W 2.25" Condition: No issues to note.

**Originally Listed At $250** East Asia, China, Shandong Province, Jurassic to Cretaceous, ca. 199.6 to 70 million years ago. A fine split matrix of several fossilized Lycoptera fish imbedded in stone

Devonian Period, 417-354 million years B.P. A fossil goniatite, polished to show the internal structures, on matrix slab. 824 grams, 18.2 cm (7 1/4 in.). From a Cambridgeshire, UK, collection. [No Res

Bid with Confidence - Trust the Artemis Advantage: - 25+ years’ experience selling ancient and ethnographic art - Ancient items have been legally acquired, and are legal to sell - Accurate descripti

impressive natural form fossil group with 7 polished ammonite specimens in stone matrix slab. 17" high, 24" wide, 2 3/4" deep. Property of a Westport, CT Collector.

Two fossilized fern leaves in stone. See additional photos for measurements.

Silurian/Devonian Period, 443-358 million years BP. A fossil Scyphocrinus elegans crinoid in matrix from Erfoud, Morocco. 2 kg, 27.5cm (11"). Property of a Lincolnshire, UK, gentleman; acquired on the

Carboniferous Period, 359-259 million years B.P. A sub-rectangular matrix displaying Pecopteris sp. fossil fern specimens to both faces. 2.09 kg, 34.6 cm (13 5/8 in.). From a Lincolnshire, UK, collect

Species: Asterophyllites equisetiformis and Sphenophyllum cuneifolium Age: Carboniferous Locality: Hérault, France Measurements: 25 × 14 cm slab Weight: 1324 g Fine Asterophyllites horsetail

Petrified wood; fossilized fish, fern and bones; encased wasp; sea urchin; box 12" x 15" x 2" deep.

Rare & beautiful Prehistoric Scyphocrinites Crinoid fossil specimen in matrix. Morocco origin. 8 1/2" H X 4 1/2" W. Crinoid Fossils make up the class Crinoidea of the Echinoderms (Phylum Echinodermata

Eocene Period, 56-33 million years BP. Two Knightia alta fossil fish in a matrix slab. 1.6 kg, 29.5cm (11 1/2"). From the Pradi Collection, Boston, USA; acquired during the 1980s; from the Green River

Carboniferous Period, 345-280 million years BP. A white Pecopteris sp. fern on matrix together with other plant specimens from St.Clair, Pennsylvania, USA. 870 grams, 22cm (8 1/2"). From the Pradi Col

Possibly Lorin Marsh fossilized marble top slab table, the rectangular top with shaped ends on a faux stone architectural base with acanthus detail. 33 1/2" high, 94" wide, 27" deep.

Title: Beautiful crinoids on slab - Scyphocrinites elegans Origin: Morocco Date/Period: Silurian Size/Dimensions: c. 40 x 17 x ~ 2 cm Description: Species: Scyphocrinites elegans Age: Silurian Localit

Ancient Seas, Morocco, Hamar Laghdad Formation, Devonian period, ca. 419.2 to 358.9 million years ago. A fine collection of 3 separate stone matrixes that each contain a fossilized trilobite, each a d

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

North Africa, Anti Atlas Mountains, Ktaoua formation, Ordovician, ca. 488 to 443 million years ago. A rare and concentrated natural stone matrix of starfish and crinoids (sea lilies) that died and fos