Comprising two intergrown egg-shaped mounds, produced by the activity of ancient cyanobacteria, the sediment layers visible on the underside. 853 grams, 11.9 cm



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 two opened nodules showing the positive and negative of the fern fossil. 366 grams total, 10-10.7 cm



From Pennsylvanian Mazon Creek, Braidwood, Illinois, USA. 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.

Each showing characteristic banding and crystal-lined cavities. 2.2 kg total, 9.3-11 cm



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

Good-sized cylindrical box with a lid carved from fossiliferous stone, the lid set with a goniatite specimen. 766 grams, 11 cm wide



Ex Cambridgeshire, UK, collection.

Thick section of agatized wood showing some bark detailing on the outer edges. 1.81 kg, 30.8 cm



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

Large quantity of pale pink rose quartz chips. 2 kg total, 1 - 30 mm



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

A light-coloured specimen on a polygonal matrix. 58.7 grams, 67 mm



From a Cambridgeshire, UK, collection.

Restrung, using recently polished Mammuthus primigenius spherical bone beads. 150 grams, 59 cm



Ex Ancient Art Shop, Windsor, UK, 1990s. Ex private West County, UK, collection.

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.

Showing high stalked eyes, elongated spines and granulose bulbous cephalon. 115 grams, 58 mm



From a Cambridgeshire, UK, collection.

With a cut base and showing characteristic ribbing, possibly Calycoceras. 5.67 kg, 23.5 cm wide



From a Cambridgeshire, UK, collection.

On a rectangular matrix, possibly Diplomystus. 335 grams, 16.5 cm



From Green River formation, Wyoming, USA. 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.

Irregular geode matrix with purple amethyst crystals; the metal branches tipped with polished dark and light green aventurine quartz pebbles. 723 grams, 18 cm



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