Fossil Jurassic Pyritized Ammonoid 145 million year

France. Ancient fossil Jurassic period. Pyritized Ammonoid. Hildoceras bifrons with matrix. 145 million year. 8x8,5-74 gr. Rare

Jurassic Period, 199-145 million years B.P. A vertebrae from the crocodile Metriorhynchus sp.; held in a white card collector's tray. 550 grams, 9 cm (3 1/2 in.). Oxford clay, Orton pit, Peterborough,

Carboniferous-Jurassic, 359-145 million years BP. A group of seven brachiopod specimens, including four spirifers (two in matrix), and three terebratulids, in old white and brown card trays with A.B.

Jurassic Period, 199-145 million years BP. A very detailed and colourful museum-quality fossil pine cone pair Araucaria Mirabilis from Cerro Cuadrado, Patagonia, Argentina; the polished cone with stro

Jurassic Period, 199-145 million years B.P.. A group of ten discoid fossil vertebra from Brachypterigius sp.; accompanied by an identification label reading 'rare Ichthyosaur vertebra, Kimmeridgian. 1

Jurassic Period, 199-145 million years B.P. Perisphinctes sp. with much of the original shell material remaining, in old white card tray with old label reading: 'AMMONITE Perisphinctes sp., Mid Jurass

Jurassic Period, 199-145 million years B.P. A Pseudocidaris mammosa fossil echinoid on a matrix. 996 grams, 16.5 cm wide (6 1/2 in.). From a Lincolnshire, UK, collection. [No Reserve]

Jurassic Period, 199-145 million years B.P. A pair of cut and polished fossil ammonite halves, each displaying the gas chambers; possibly Cleoniceras sp. 172 grams total, 95-97 mm (3 3/4 - 3 7/8 in.).

Jurassic Period, 199-145 million years BP. Two dorsal vertebrae from the Ichthyosaur marine reptile. 559 grams, 8.5cm (3 1/4"). Property of a Lincolnshire, UK, gentleman; acquired on the UK art market

Jurassic Period, 200-145 million years BP. A free-standing matrix with a large Aegasteroceras sp. ammonite fossil from the Frodingham Ironstone Formation. 955 grams total, 12.3cm (5"). From an East An

Jurassic Period, 199-145 million years BP. A professionally curated display comprising two free-standing Clypeus plotti sea urchins. 1.3 kg, 17.2cm (6 3/4"). From an old Bristol paleontological collec

Jurassic Period, 199-145 million years BP. A fossil ammonite in limestone matrix, upper face polished for display. 707 grams, 13.5cm (5 1/4"). From an old Hampshire collection; from Jurassic Coast, Ly

Jurassic Period, 199-145 million years BP. A group of three fossil Perisphinctes sp. ammonites with much of the original shell material remaining. 380 grams total, 68-76mm (2 3/4 - 3"). From an East A

Jurassic Period, 199-145 million years BP. A fine example of the ammonite Perisphinctes sp. with much of the original shell material remaining, in old white card tray with old label reading: 'AMMONITE

Jurassic Period, 199-145 million years BP. A sawn and polished section of a fossil wood (petrified wood) log from Patagonia retaining some original grain, in old white card tray with old Gregory, Bott

Jurassic Period, 199-145 million years BP. A fine example of the ammonite Perisphinctes sp. with much of the original shell material remaining, in white card tray. 188 grams, 83mm (3 1/4"). From a his

Jurassic Period, 200-145 million years BP. A cut and polished matrix containing a fossil ammonite showing the internal chambers and crystal formation. 562 grams, 13.5cm (5 1/4"). From a Lincolnshire,

Jurassic Period, 199-145 million years BP. A group of two cut and polished Eparietites denotatus sections, crystals to the cells on the inner faces. 616 grams total, 16-17.5cm (6 1/4 - 7"). From a Lin

Jurassic Period, 199-145 million years BP. A natural iridescent shell Parkinsonia sp. ammonite, in white card tray with label reading: 'Ammonite, Parkinsonia sp., Mid Jurassic Age (approx. 170 million

Jurassic Period, 199-145 million years BP. A cut section of fossilised tree with visible grain. 589 grams, 8cm (3"). Property of a London gentleman; acquired in the 1970s. [No Reserve]

Jurassic Period?, 203-145 million years BP. A mortality specimen of the brittle star Furcaster sp?, comprising 11 'stars' averaging about 2.2 cm across, some stars showing good detail, with additional

Jurassic Period, 201-145 million years BP. A cut and polished piece of limestone with numerous belemnite fossils showing internal mineral structure; label to the back reading; 'Jurassic Lower Lias Pol

Jurassic Period, 200-145 million years BP. An A-grade cut and polished ammonite from Madagascar, showing internal chambers and crystal formation, opalescent lustre to the shell. 18 grams total, 35mm (

Jurassic Period, 200-145 million years BP. A sawn and polished pair of ammonite halves from Madagascar, showing its inner chambered structure, in an old white card tray with label reading: 'AMMONITE,