Ordovician Period Fossilized Trilobites in Matrix

Ancient Seas, Eastern Europe, probably Russia, Ordovician Period, ca. 485.4 to 443.8 million years ago. A charming group of four fossilized trilobites captured on a stone matrix from where they once p

Ancient Seas, Russia, St. Petersburg, Volkhov River, Ordovician Period, ca. 485.4 to 443.8 Million years ago. Two charming fossilized trilobites captured on a stone matrix from where they once patroll

Originally listed at $400 North America, Midwestern United States, Ohio, Paleozoic period, ca. 300 to 400 million years ago. A pair of two slate matrixes containing a trilobite fossil in each and a b

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

Ordovician Period, 488-444 million years B.P. A group of three fossil Ogygius corndensis(?) trilobite specimens in three irregular matrices. 273 grams total, 5.3-10.5 cm (2 - 4 1/8 in.). From a Lincol

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, Russia, Ordovician period, ca. 485.4 to 443.8 million years ago. A stunning trilobite fossil within a stone matrix, of the genus Paraceraurus aculeatus. The trilobite is beautifully pres

Ancient Seas, Morocco, mid Devonian period, ca. 393.3 to 382.7 Million years ago. A fantastic fossilized trilobite encased within a stone matrix, with a slightly curled profile. The magnificent triden

Ancient Seas, Morocco, Hamar Laghdad Formation, Devonian period, ca. 419.2 to 358.9 Million years ago. A fantastic and well preserved fossilized trilobite raised above a stone matrix. The trilobite ha

Ancient Seas, United States, Oklahoma, Coal County, Haragan Formation, ca. Devonian period, ca. 419.2 to 358.9 Million years ago. A wonderful fossilized trilobite on display and encased in a stone mat

**Originally Listed At $350** Ancient Seas, Morocco, Devonian Period, ca. 416 to 359.2 million years ago. A large, fossilized trilobite of the Paralajurus species, with excellent remaining details, di

Ordovician Period, c.450 million years B.P. A well-detailed fossil trilobite nest in a matrix. See Seilacher, A., Trilobite Burrows, 2007, for further information. 650 grams total, 16.5 cm (6 1/4 in.)

**Originally Listed At $200** North Africa, Morocco, Devonian Period, ca. 416 to 359.2 million years ago. A collection of 3 fossilized trilobites in separate stone matrices, each carefully excavated a

Ordovician to Eocene Period, 450-45 million years BP. A collection of fossils in cardboard trays comprising: a Ogygiocarella sp. trilobite impression in matrix from Shropshire, accompanied by an old G

Ancient Seas, Morocco, Mid Devonian period, ca. 387 million years ago. A fabulous trilobite fossil encased in a stone matrix. The trilobite is well preserved and retains much of the spikey pustules on

Ancient Seas, Morocco, Hamar Laghdad Formation, Devonian Period, ca. 419.2 to 358.9 Million years ago. A beautiful and unusual looking trilobite fossil within a stone matrix and presented on a modern

**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

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

Title: Giant natural Protaster on matrix Date/Period: Ordovician, Kataoua Formation Findspot: El Kaid Errami, Morocco Size of the Slab: 18 x 14.5 cm Size of the fossil: 12.5 cm Weight: 1461 gr Reserve

Group of four fossilized trilobites in a metamorphic limestone matrix, likely from the region in or around Morocco. The fossilization process occurred over 300 million years ago, but due to our lack o

Group of four fossilized trilobites in a metamorphic limestone matrix, likely from the region in or around Morocco. The fossilization process occurred over 300 million years ago, but due to our lack o

Group of four fossilized trilobites in a metamorphic limestone matrix, likely from the region in or around Morocco. The fossilization process occurred over 300 million years ago, but due to our lack o

DESCRIPTION: Four fossilized trilobites, three of which are in matrixes. One trilobite has a fairly well-preserved eye. CIRCA: Ancient DIMENSIONS: (Trilobites, not including matrixes) H: 0.25-1.25" W:

Ordovician Period, 485-444 million years B.P. A matrix containing a fossil starfish, petraster and edrioasteroids Spinadiscus lefebvrei. 283 grams, 96 mm (3 3/4 in.). From the Tioririne Formation, El