The remains of a fossil crab set in a sedimentary matrix with its legs and claws curled underneath the body. 1.16 kg, 13.4 cm



From a Cambridgeshire, UK, collection.

Mixed group of bone and teeth fragments, including molars and canines. 193 grams total, 14-73 mm



Previously in several old Stone Age tool collections, having been annotated with two different accession numbers. Acquired from an Oxfordshire, UK, auction house. From the private collection of a West Midlands lady collector.

An irregular matrix with multiple Southern beech leaves. 301 grams, 18 cm



From the Redbank Plains formation, Ebbw Vale, Ipswich, Queensland, Australia. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.

Comprising a set of six round coasters and a holder, carved from fossiliferous stone. 700 grams total, 91 mm



Ex Cambridgeshire, UK, collection.

Comprising six circular coasters, the Orthoceras have been polished through the shell to reveal the calcite preserved inside and showing the dividing gas chambers known as suture patterns. 682 grams, 91 mm wide



From a Cambridgeshire, UK, collection.

Restrung, using recently polished Mammuthus primigenius spherical bone beads. 148 grams, 62 cm



From a UK collection formed in the 1980s. Property of an Essex, UK, gentleman.

The mammoth lineage branched from the Asian elephant around 6 million years ago, and later on the Woolly Mammoth, Mammuthus primigenius, evolved in eastern Siberia. Woolly mammoths, being slightly smaller than living African elephants, were foragers and ate grass, as well as small, nutritious flowering plants that flourished in the environment where they lived. They may also have used their curved tusks to dig through snow and eat plants that other foragers were unable to reach.

Composed of polished polygonal, discoid and other beads, restrung with a metal hook-and-loop clasp. 58 grams, 54 cm



Acquired in the 1990s-early 2000s. Ex London, UK, collection.

Orange translucent amber with a pair of Diptera inclusions. 3.5 grams , 37 mm



From a Norfolk, UK, collection.

With large claws, from the Solnhofen limestone. 268 grams, 12.5 cm



From a Cambridgeshire, UK, collection.

Comprising the body and both front legs with claws. 34.6 grams, 60 mm



From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.

Opaque dark blue crystal showing lamellar twinning. 0.79 grams, 9 mm



Property of an Essex, UK, gentleman.

Comprising three polished specimens showing the internal structure. 360 grams total, 60-91 mm



From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.