Ancient Art, Antiquities, Books, Natural History, Stamps & Coins

Rounded section of a coral head showing the individual polyps forming it. 160 grams, 67 mm



From a Cambridgeshire, UK, collection.

A circular composite plate composed of overlapping Cleoniceras sp. ammonites. 140 grams, 12 cm



From a Lincolnshire, UK, collection.

Ammonite-shaped lidded box carved from stone with a goniatite set on the lid. 1.39 kg, 15.6 cm



Ex Cambridgeshire, UK, collection.

With a cut base and showing characteristic ribbing, possibly Calycoceras. 1.13 grams, 11.2 cm



From a Cambridgeshire, UK, collection.

Pair of large agate and quartz geode sections in enhanced blue colour, cut as bookends and showing attractive straight banding and large crystal formations. 9.5 kg total, 16.5-17.5 cm



From Brazil. Property of a Bristol, UK, gentleman collector.

Group of teeth and vertebrae from various orders of shark; mounted with identifying labels in a glazed wooden frame. 364 grams total, 25.3 x 15.5 cm including case



From Morocco, North Africa. Property of a Bristol, UK, gentleman collector.

Large, partial fossil of a trilobite, comprising the head and part of the carapace. 1.54 kg total, 16.5 cm



Acquired on the UK art market. Property of a Nottinghamshire, UK, gentleman.

A nickel-iron meteorite (IAB). 90 grams, 40 mm



From a Lincolnshire, UK, collection.

A crater field of roughly 26 craters was found in the vicinity of this crater, which is estimated to date to 4-5 thousand years BP. The age of the meteorite itself is thought to be c.4.5 billion years, formed as part of the development of this solar system. The largest two fragments, the 30.8-ton Gancedo and 28.8-ton El Chaco, are among the heaviest meteorite masses ever recovered on Earth. In 1576, the governor of a province in Northern Argentina commissioned the military to search for a large mass of iron, which it was believed the local people claimed had fallen from the sky and which they used for their weapon production. The expedition discovered a large mass of metal, which was assumed to be an iron mine, and brought back a few samples, which were described as being of unusual purity. Following the legends, in 1774, Don Bartolomé Francisco de Maguna rediscovered the iron mass. He himself did not believe that the stone had fallen from the sky and assumed that it had formed by a volcanic eruption. However, he sent the samples to the Royal Society of London. In 1990, it became protected by law.

Medium-sized sphere showing silvery-white metallic schiller effect on one side. 373 grams, 66 mm



From a Cambridgeshire, UK, collection.

Carcharocles megalodon shark tooth, with serrations and polished tooth enamel. 208 grams, 11.3 cm



From a Lincolnshire, UK, collection.

Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on the structuring of 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 a set of six round coasters and a holder, carved from fossiliferous stone. 660 grams, 90 mm wide



Ex Cambridgeshire, UK, collection.

Curving tooth of Mosasaur prognathodon set in a jaw fragment. 152 grams, 80 mm



From a Cambridgeshire, UK, collection.

The Mosasaur is an extinct, large marine reptile 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.