Comprising three rounded matrices each with Knightia alta specimen. 163 grams total, 72-82 mm



From Wyoming (Green River Formation), USA. From a Lincolnshire, UK, collection.

In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Ulinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.

A large Cambropallas telesto trilobite on a textured matrix. 1.52 kg, 24 cm



From Atlas Mountains, Morocco, North Africa. From a Cambridgeshire, UK, collection.

Mixed group of various sizes, all with preserved scales and tripartite body structure. 1.56 kg total, 7.9-10 cm



Acquired on the UK art market before 2000. Property of an Essex, UK, gentleman.

Each with intergrown crystals of various sizes displaying typical striations, from Huanuco, Peru. 480 grams total, 25-52 mm



From Huanuco, Peru. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

A trio of rounded geodes, each unopened. 518 grams total, 49-69 mm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.

An irregular matrix with a single Petraster sp. specimen. 550 grams, 12.1 cm



From a Lincolnshire, UK, collection.

A large polished piece with an insect inclusion. 2.9 grams, 27 mm



From Primorskoje mine, Yantarnyi, Kaliningrad. Property of an Essex, UK, gentleman. Accompanied by an illustrated identification card, collection no.3198.

Comprising two teeth with some tooth; repaired. 35 grams total, 66 mm each



From a Lincolnshire, UK, collection.

A polished section containing Diptera and other inclusions. 2.5 grams, 30 mm



From a Lincolnshire, UK, collection.

Comprising egg-shaped specimens of fossilised coral, orange alabaster and one in white material with a hole to the base, and an agate sphere. 878 grams total, 60-65 mm



Burwell collection, Cambridgeshire, UK.

Comprising four Mosasaur Prognathodon teeth set in a jaw fragment with other bone fragments. 128 grams, 13.1 cm



From Morocco, North Africa. From a Cambridgeshire, UK, collection.

The Mosasaur is an extinct, large marine reptile dinosaur with an elongated body, long snout and paddle-like limbs. Found worldwide, they competed with other well-known sea predators of the Late Cretaceous, such as plesiosaurs and ichthyosaurs, for food, existing primarily on a diet of ammonoids, cuttlefish and fish.

A triangular section with deep-coloured prismatic crystals. 543 grams, 11.2 cm



From Brazil. From a Lincolnshire, UK, collection.