Natural History - Fossil Brittle Star on Matrix

Ordovician Period, 485-444 million years B.P. A polygonal matrix displaying a fossilised Ophiura sp. brittle star. 449 grams, 14 cm (5 1/2 in.). From Morocco, North Africa.Ex Lincolnshire, UK, collect

Ordovician Period, circa 485.4-443.8 million years B.P. Ophiuroidea sp. on an irregular matrix. 383 grams, 14.5 cm (5 3/4 in.). Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collecti

Ordovician Period, 450 million years BP. A mortality plate displaying five large brittlestars, Ophiura sp. showing much detail. 1.9 kg, 28cm (11"). Property of a Lincolnshire gentleman; formerly in an

Ordovician Period, 485-444 million years BP. A mortality plate displaying two large brittlestars, Ophiura sp. from the Kataoua formation in Blekus, Morocco. 860 grams, 18x17cm (7 x 6 3/4"). From an ol

Ordovician Period, 450 million years BP. A mortality plate displaying four large brittlestars, Ophiura sp. showing much detail. 1.7 kg, 29.5cm (11 1/2"). Property of a Lincolnshire gentleman; formerly

Jurassic Period, 203-145 years BP. A fossil of the 'brittle star' Geocoma elegans from Ardiche, France, in old white card tray with A. B. Cotterill Collection, Wollaton, Nottingham, UK, label. See Geo

Cretaceous Period, 145-65 million years B.P. A pair of rectangular sedimentary matrices, each containing a fossil shrimp. 139 grams total, 56-71 mm (2 1/4 - 2 3/4 in.). From Lebanon.Ex Lincolnshire, U

Ordovician Period, 485-444 million years B.P. An Ophiuroidea sp. fossil brittle star in a matrix, together with a partial; held in a white card collector's tray. 152 grams, 11 cm (165 grams, 100 x 78

Ordovician Period, 485-444 million years B.P. A group of three Ophiuroidea sp. fossil brittle stars in three matrices, two near complete, one partial; held in a white card collector's tray. 4-78 grams

Eocene Period, 58-36 million years BP. A matrix with complete fossil fish Knightia eocaena and a second partial from Warfield's Quarry, Kemmerer, Green River Formation, Wyoming, U.S.A. 688 grams, 20cm

Eocene Period, 58-36 million years BP. A sedimentary matrix with a Knightia alta fossil fish from Wyoming (Green River Formation), USA. 2.2 kg, 31cm (12 1/4"). Property of a Lincolnshire, UK, gentlema

Eocene Period, 58-36 million years BP. A matrix with a complete fossil fish Knightia eocaena from Warfield's Quarry, Kemmerer, Green River Formation, Wyoming, U.S.A. 1.2 kg, 22.5cm (8 3/4"). Property

Cambrian-Permian Period, 521-250 million years B.P. A Coltraneia sp. fossil trilobite; held in a white card collector's tray. 221 grams, 86 mm (3 3/8 in.). From Morocco, North Africa.Ex Cambridgeshire

Eocene Period, 56-33 million years B.P. A rectangular sedimentary matrix displaying a Mioplosus sp. fossil fish. 937 grams, 17.8 x 13 cm (7 x 5 1/8 in.). Ex Lincolnshire, UK, collection. In southwest

Lot of two natural specimen fossils encased in stone matrix. Measure from 1/4" - 3 3/4" in height x 4 1/4" - 5" in length. No apparent markings. Condition: Good overall condition having normal surface

Eocene Period, 58-36 million years BP. A fossil Diplomystus fish from the Green River Formation, Lincoln County, Wyoming, USA. 559 grams, 23cm (9"). From the Pradi Collection, Boston, USA acquired dur

Cretaceous Period, 145-65 million years B.P. Possibly Pseudostacus hakeliensis, together with a fossil fish, possibly Rhinobatos sp., both showing some good detail. 4.5 kg, 41 cm (16 1/8 in.). From Le

Ordovician Period, 485-444 million years B.P. A group of three fossil Ophiuroidea sp. brittle stars in a matrix; held in a white card collector's tray. 200 grams, 12 cm (201 grams total, 12.7 x 9.2 cm

Late Permian-Early Triassic Period, circa 252-250 million years B.P. In an irregular matrix. 12.2 kg, 43 cm (17 in.). From Madagascar. From a Cambridgeshire, UK, collection.This lot has been checked a

Cretaceous Period, c.100 million years BP. A near complete fossil Barrasaurus marine 'dinosaur' skeleton in a matrix. 372 grams, 17.5cm (7"). From an East Anglia, UK, collection; from China.

Triassic Period, 250-200 million years BP. A complete fossil Keichousaurus hui marine 'dinosaur' skeleton on matrix. 1.5 kg, 27.3cm (10 3/4"). From a Lincoln palaeontological collection; acquired 1970

Late Permian-early Triassic Period, circa 255 million years B.P.. Two rare Barasaurus besairiei skeletons on a matrix. 2 kg, 29.5 cm (11 5/8 in.). From Plateau de I'lsala, Madagascar.Acquired 1950s-19

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

Silurian/Devonian Period, 443-358 million years BP. A fossil Scyphocrinus elegans crinoid in matrix from Erfoud, Morocco. 1.9 kg, 27.5cm (10 3/4"). Property of a Lincolnshire, UK, gentleman; acquired