Natural History - Acanthoceras Ammonite

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

Ammonite fossil, Jurassic to Cretaceous period, the shelled cephalopod in two sections, on a gilt metal stand. [5 1/2" H x 3 1/2" W x 3" D].

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, 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

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.

Jurassic Period, 199-145 million years B.P. Comprising a composite of various sized ammonites with polished upper surface. 778 grams, 23 cm wide (9 in.). From Madagascar. From a Lincolnshire, UK, coll

The remains of an extinct marine creature from the Jurassic period fossilized in limestone. This Nautilus style shell form features a tight spiral and ribbed exterior. Total weight ~ 2470 grams. No ap

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.)

Early Jurassic Period, Lower Lias stage, 200-195 million years BP. A group of ten small pyrite ammonites, mainly Crucilobiceros densinodulum and Promicroceras sp from Pentacrinites Band, Stonebarrow,

Jurassic Period, circa 200-145 million years B.P. Comprising six specimens, including two Perisphinctes sp., a Dactylioceras sp. and two iridescent specimens. 190 grams total, 31-64 mm (1 1/4 - 2 1/2

Early Jurassic Period, 200-195 million years BP. A group of ten small pyrite ammonites, mainly Crucilobiceros densinodulum and Promicroceras sp. from Pentacrinites Band, Stonebarrow, Charmouth, Lyme R

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, 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,

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

Jurassic Period, 199-145 million years BP. A sedimentary slate(?) matrix with two large examples of the psiloceras ammonite and numerous others. 28 kg, 75cm (29 1/2"). From an important London collect

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

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

Jurassic Period, 199-145 million years BP. A cut and polished ammonite with crystal formations in the cavities, from Madagascar. 705 grams, 15cm (6"). Property of a London lady; by inheritance; former

Cretaceous Period, 145-66 million years B.P. Freestanding, showing good ribbing. 987 grams, 13 cm wide (5 1/8 in.). From a Cambridgeshire, UK, collection. Property of a Cambridgeshire, UK, gentleman.

Middle Jurassic Period, circa 158 million years B.P.. A Stephanoceras sp. ammonite with its base cut flat for freestanding display. 1.4 kg, 15.5 cm (6 1/8 in.). From Burton Bradstock, Dorset, UK. Ex o