Natural History - Polished Whitby Dac Fossil Ammonite Group

Lower Jurassic Period, Toarcian Stage, circa 180 million years B.P.. The round nodule half containing a Pseudolioceras ammonite. 554 grams total, 11.6 cm (4 1/2 in.). Ex Lincolnshire, UK, collection.

Lower Jurassic Period, Toarcian Stage, Grey Shales, 180 million years BP. A fossil ammonite Dactylioceras sp., within a small shale pebble, including the upper mould portion. 303 grams total, 63-75mm

Middle Cretaceous Period, circa 150 million years B.P. Comprising three Douvilleiceras sp. specimens (sometimes known as a Goat Horn), polished to reveal rich calcites and suture patterns. 160 grams t

Devonian Period, 417-354 million years B.P. A group of five polished Goniatite sp. fossil ammonite 'buttons'. 590 grams total, 73-86 mm (2 7/8 - 3 3/8 in.). From Morocco, North Africa.Ex Cambridgeshir

Cretaceous Period, Albian Stage, 113-100 million years BP. A group of eight small A-grade cut and polished Cleoniceras sp. ammonites from Madagascar, with the distinctive pattern of the cross-section

Cretaceous Period, 200-65 million years BP. Group comprising: a small ammonite, cut and polished in two halves, with two small fossil fish specimens, in matrix. 618 grams total, 3.2-14.7cm (1 1/4 - 5

Jurassic Period, circa 200 million years B.P. Promicroceras planicosta with iron stained surface giving a beautiful contrast in colour, from the Lower Lias, Obtusum Zone. 42.53 grams, 67 mm (2 3/5 in.

Jurassic Period, circa 199-145 million years B.P. A composite plate containing a large number of variously sized ammonites, polished upper face. 835 grams, 24.7 cm (9 3/4 in.). From Madagascar. From a

Devonian Period, circa 417-354 million years B.P. Comprising three polished, dome-shaped masses, each with a central Goniatite sp. specimen. 368 grams total, 70-75 mm (2 3/4 - 3 in.). From the Atlas M

Cretaceous Period, circa 150 million years B.P.. Cleoniceras sp. displaying the distinctive pattern of the cross-section chambers. 269 grams total, 10.5-10.7 cm (4 1/8 - 4 1/4 in.). From Madagascar.Co

Middle Cretaceous Period, circa 150 million years B.P. Cleoniceras sp. displaying the distinctive pattern of the cross-section chambers, some iridescence to outer surfaces. 220 grams, 95 mm each (3 3/

Jurassic Period, 199-145 million years B.P. A pair of cut and polished fossil ammonite halves, each displaying the gas chambers; possibly Cleoniceras sp. 172 grams total, 95-97 mm (3 3/4 - 3 7/8 in.).

Middle Cretaceous Period, 150 million years B.P.. Polished to reveal the distinctive structure of the Cleoniceras sp. chambers, some iridescence. 124 grams total, 77-81 mm (3 - 3 1/8 in.). From Madaga

Jurassic Period, 200-145 million years BP. A sawn and polished pair of ammonite halves from Madagascar, showing its inner chambered structure, in an old white card tray with label reading: 'AMMONITE,

Bacocian stage of the Jurassic Period, 168-172 million years BP. A large polished chambered ammonite Oolite sloenbachia sp. from Arbala, Middle Atlas Mountains, Morocco. 740 grams, 15cm (6"). Property

Middle Jurassic, Inferior Oolite, Aalenian Stage, 170 million years BP. A group of two fossil ammonites on matrix, one Graphoceras sp. and the other possibly Leioceras sp., in old white card trays, on

Jurassic Period, circa 180 million years B.P. A group of Gagaticeras sp. fossil ammonites in an oval-shaped pebble. 770 grams, 14.2 cm (5 1/2 in.). From Lower Jurassic, Lower Lias, Yorkshire. From a L

Jurassic Period, 199-145 million years B.P. A group of three polished Whitby ammonite fossils. 277 grams total, 61-70 mm (2 3/8 - 2 3/4 in.). From Whitby, Dorset, UK. From a Lincolnshire, UK, collecti

Cretaceous Period, Albian Stage, 113-100 million years BP. A group of two A-grade, cut and polished Cleoniceras sp. ammonites from Madagascar, polished through much of the shell to reveal the calcite

Lower Jurassic, Toarcian Stage, Upper Lias, Grey Shales, 199-175 million years BP. A large split Dactylioceras commune ammonite nodule, showing both positive and negative aspects, from Whitby, UK. 632

Jurassic Period, 201-145 million years BP. A group of cut and polished ammonite halves revealing the inner chambers, two in old white card trays with A.B. Cotterill Collection, Wollaton, Nottingham, U

A group of ten fossil branch sections of varying length and thickness. 1.2 kg total, 6.3-10.7 cm (2 1/2 - 4 1/4 in.). From Madagascar. Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's).

Late Cretaceous Period, 70 million years BP. A polished section of the Baculites compressus straight ammonite showing the structure; with label. 122 grams, 80mm (3"). Property of a Kent, UK collector;

350-100 million years BP. A group of ten British ammonites of mixed species, five accompanied by catalogue cards, two of which have Natural History Museum identification labels. 3.39 kg, 60-120mm (2 1