The attractive internal structure filled with yellow calcite, brown aragonite, and grey limestone. 2.78 kg, 19.7 cm



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

A Knightia alta fish on a rectangular limestone matrix. 929 grams, 17.5 x 12.5 cm



From Wyoming, USA. From the private collection of a Devon, UK, lady.

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 Uinta, 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.

Rectangular translucent specimen with a crane fly or similar. 0.9 grams, 21 mm



From a Norfolk, UK, collection.

Large dish carved from fossiliferous stone and set with a goniatite specimen. 813 grams, 23 cm



Ex Cambridgeshire, UK, collection.

Polished freestanding stone with attractive white formations against a dark background. 554 grams, 99 mm



From a Cambridgeshire, UK, collection.

Carved from a fossiliferous stone and the lid set with a goniatite specimen. 557 grams, 12.8 cm



Ex Cambridgeshire, UK, collection.

Limestone matrix showing one large leaf on one side and several overlapping fragments on the reverse. 670 grams, 13.5 cm



From a UK private collection since at least 1946. Property of a West London, UK, gentleman.

Crotalocephaline gibbus on a matrix showing characteristic sharp pygidial spines. 219 grams, 93 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.

Two highly polished translucent slices with brown and grey banding with quartz crystal formation inside, one resembling a 'smiley face'. 478 grams total, 16.1-17 cm



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

Tapering specimen with insect and other inclusions. 10.25 grams, 11.1 cm



From a Cambridgeshire, UK, collection.

Comprising: chalcanthite from Planet Mine, La Paz County, Arizona, USA; apophylite from Pune, Maharashtra, India; stilbite from Jalgaon District, Nashik Division, Maharashtra, India; pyrite from Ottawa, Franklin County, Kansas, USA; heulandite from India. 355 grams total, 3.7-10.3 cm



From the property of a Cornwall, UK, gentleman.

Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished quartz pebbles. 662 grams, 18 cm



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