Natural History - South Dakota Fossil Ammonite Section

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;

Two natural history items, including: Placenticeras ammonite fossil, unearthed near Wasta, South Dakota; together with black tourmaline and quartz specimen; L: 11 1/4" (larger, approx.)

Upper Cretaceous Period (Campanian), 76-75 million years BP. A large ammonite, from Fox Hills Formation, South Dakota, USA, cut and polished displaying the distinctive pattern of the cross-section cha

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/

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

Fossil Ammonite and Baculite Cretaceous South Dakota

Ammonoidea coiled shell cephalopod, probably Devonian to late Cretaceous period. [9 1/4 x 12 1/2 x 3 3/4 inches].

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.

Art by God, A Natural History Fossil Ammonite Specimen. This is a great pre historical conversation piece for the home or office. Museum quality and investment worthy. SHIPPINGHill Auction Gallery wil

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

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

Jurassic Period, 199-145 million years B.P. Perisphinctes sp. with much of the original shell material remaining, in old white card tray with old label reading: 'AMMONITE Perisphinctes sp., Mid Jurass

Late Cretaceous Period, Cenomanian-Turonian Stages, circa 100- 90 million years B.P.. A freestanding example of a large Mammites nodosoides fossil ammonite. 3 kg, 20 cm (7 7/8 in.). From Morocco, Nort

Cretaceous Period, circa 113-100 million years B.P.. Cleoniceras besairiei with large portions of the shell with rainbow iridescence. 242 grams, 10 cm (4 in.). From a Lincolnshire, UK, collection. [No

Upper Jurassic Period, 170 million years BP. A Harpoceras elegans ammonite from Somerset, UK; mounted on a custom-made stand. 540 grams, 16.5cm including stand (6 1/2"). Property of a Lincolnshire, UK

Jurassic Period, circa 200-190 million years B.P.. The matrix with two Dactylioceras tenuicostatum fossil ammonite specimens. 1.6 kg, 14 cm (5 1/2 in.). From the Holderness Coast, Yorkshire, UK. [No R

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

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.

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

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

Jurassic Period, Sinemurian, circa 200 million years B.P.. Showing the partial remains of a Eteoderoceras sp. fossil ammonite. 982 grams, 14.5 cm (5 3/4 in.). From North Yorkshire, UK.

Late Cretaceous Period, Cenomanian Stage, 100-94 millions years BP. An Acanthoceras sp. ammonite from Agadir, Morocco. 1.6 kg, 16.5cm (6 1/4"). Property of a Lincolnshire, UK, gentleman; acquired on t

Jurassic Period, circa 180-185 million years B.P.. Presenting an Amaltheus stokesi fossil ammonite in a matrix, together with other fossil inclusions. 1.2 kg, 17.5 cm (6 7/8 in.). From Hawsker, North