Large collection of shark teeth, including Odontapsis, Lamna oblirua, Charcharodon auriculatus, Striatolamia, and others; most with an inked collector's number or a numbered sticker. 973 grams total, 30.5 x 24 cm including box



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. Accompanied by a list with collection numbers describing each species, dates, and provenances.

Comprising twenty-eight specimens of small intergrown pyrite crystals, some with characteristic striations. 2.56 kg total, 37-67 mm



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

Comprising ten polished slices showing contrasting banding, six in enhanced green colour. 1.08 kg total, 10.5-13.3 cm



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

Large quantity of pale pink rose quartz chips. 556 grams total, 1-35 mm



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

The main body of a vertebra with two raised ridges underneath, likely a pygal or caudal vertebra; old inked collector's number 'VR26'. 622 grams, 96 mm



From near Harlan County Dam, Nebraska, 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.

Tylosaurus was an apex marine predator during the Late Cretaceous period, and is classified in the superfamily Mosasauroidea.

Sub-translucent formation of greenish-blue aquamarine set on a wooden display stand. 3.42 kg total, 22 cm high including stand



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

Comprising two thick teeth with dark brown enamel. 77 grams total, 51-65 mm



From a Lincolnshire, UK, collection.

The Mosasaur is an extinct, large marine reptile dinosaur 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.

Comprising five freestanding specimens with polished faces, some with enhanced colouring. 2.35 kg total, 10.7-11.4 cm



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

Comprising: calcite from Dulcote Quarry, Wells, Somerset; quartz from Wheal Wrey, St Ive, Cornwall; sphalerite and chalcopyrite from Great South Tolgus, Tarewaste, Cornwall; pyrite from Trevaunance Cove, St Agnes, Cornwall; goethite from Barngate Level, Restormel Royal Iron Mine, Lostwithiel, Cornwall; quartz on fluorite from Wheal Mary Ann, Menheniot, Cornwall; goethite and quartz from Cornwall; quartz from Royal Restormel Mine, Lostwithiel, Cornwall; pyrite from Cornwall. 3.42 kg total, 6.3-12.6 cm



From the property of a Cornwall, UK, gentleman.

Composite plate with cut ammonite slices set in resin. 124 grams, 12 cm



From a Lincolnshire, UK, collection.

Comprising a quantity of small specimens in a display box. 8.67 grams total, 58 x 38 mm including box



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

An oval pebble showing mainly blue and green iridescence. 221 grams, 87 mm



From a Lincolnshire, UK, collection.