A complete Petraster sp. specimen on an irregular matrix. 248 grams, 99 mm



From a Cambridgeshire, UK, collection.

Restrung using mainly tabular, facetted and domed beads, interspersed with small oblate glass beads. 43 grams, 42.5 cm



Ex London art market. Property of a North London, UK, gentleman.

Comprising specimens of different sizes, including examples retaining some or most of the root, enamel and/or serration. 940 grams total, 3-31 mm



Acquired 1990s-early 2000s. East Anglian private collection.

Comprising two matrices, each with a pair of Carpopenaeus sp. specimens. 434 grams total, 11.1-12.5 cm



From Lebanon. From a Cambridgeshire, UK, collection.

A large domed structure with polished upper face. 380 grams, 100 mm



From a Cambridgeshire, UK, collection.

A large curved Mosasaur prognathodon tooth with root. 154 grams, 12 cm



Acquired on the European art market since the early 2000s. From the private Northern Ireland collection of R.M.

Cut Cleoniceras sp. ammonite, polished to reveal the distinctive structure of the chambers. 98 grams total, 72 - 74 mm



From Madagascar. From a Lincolnshire, UK, collection.

From Carcharocles megalodon showing serrations to both edges; repaired. 73 grams, 81 mm



From a Perthshire, collection, Scotland, UK.

Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on structuring of the marine communities. Fossil remains indicate that this giant shark reached a length of more than 16 metres (52 ft) and also affirm that it had a cosmopolitan distribution. Scientists suggest that in life it looked like a stockier version of the great white shark, Carcharodon carcharias.

Comprising two complete polished bivalves. 298 grams total, 69-76 mm



From Morondava River Basin, Atsimo-Andrefana Region, Southwest Madagascar. From an old Oxfordshire, UK, fossil and mineral collection.

Comprising two teeth with partial roots; repaired. 31.6 grams total, 54-56 mm



From a Lincolnshire, UK, collection.

The Spinosaurus was both a beachcomber type scavenger and an active hunter taking small stranded Plesiosaurs, Pterosaurs, turtles and large fish.

Comprising three Knightia alta fish on individual matrices. 140 grams, 72-90 mm



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.

Restrung using recently polished Mammuthus primigenius bone beads. 176 grams, 56 cm long



From a London, UK, collection.