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Arnioceras semicostatum fossil ammonite specimens dated to the lower Lias stage of the Jurassic period, around 160 million years ago. These samples are with a hard limestone matrix and were found in East Yorkshire, UK. They exhibit a ribbed, coiled shell and appear as many would expect of an ammonite, making these suitable for younger people with an interest in geology or fossils as well as collectors and educational bodies. The samples overall have a grey tone in colour though some are a faded brown and contain an amount of fossil shells per piece, increasing with size. Available in three sizes and supplied in a card tray with an information label.
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Arnioceras semicostatum fossil ammonite specimens embedded within limestone matrix from the Jurassic rocks of the, East Yorkshire, UK. Arnioceras is an extinct genus of ammonite which existed during the lower Lias stage of the Jurassic period around 180 million years ago. Their shells represent the typical ammonite form and shape one would expect and is evolute, bearing pronounced, sharp ribs with a ventral keel without furrows. Under these ribs some specimens may show the ammonitic suture lines, which are much easier to see with aid of magnification. Lime all ammonoids, they were aquatic in lifestyle and possessed a soft squid like body, part of which was housed and protected within the shell, which was a form of defence against predators. Over all, the species was distributed world wide with specimens found Europe, South Asia, and the Americas, they exhibit a grey sometimes faded brown colouration and are on a solid limestone matrix making them fairly solid and less prone to damage. They are excellent specimens and suitable for those with an interest in geology, fossils or educational use and for collectors and come available in various optional sizes and will arrive in a card tray with an information label.
Weight | 640 g |
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Specimen Size | 2" x 2", 3.5" x 5", 3" x 2", 4" x 3", Single Specimen No Matrix |
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Species Name: Dactylioceras Athleticum
Family: Ammonite
Age: Jurassic, Upper Lias, Toarcian
Location: Schlaifhausen, Germany
Out of stock
• Geological Age: Jurassic period, lower lias, obtusum zone, 200 to 174 million years old.
• Location: Charmouth, Dorset, UK.
• Family: Ammonoid
• Species: Promicroceras planicosta
Promicroceras planicosta amomnite fossils which exhibit excellent morphological features, deep ribbing, evolute shells with open umbilicus, these samples are from the Jurassic period and were collected from Charmouth in Dorset, UK, 25 mm in size they are suitable for collectors, their shells have become agatised during the fossilisation process and so exhibit a pearly lustre and are still set within a limestone matrix. Supplied in a card tray with a label.
A large Haugia Fossil Ammonite specimen from France, measuring 13.5cm in diameter. The specimen has been cleaned up and suture lines are clearly visible. If placed in the right position, the fossil is free standing. The specimen comes with a small information card.
Species Name: Taramelliceras sp.
Family: Ammonite
Age: Jurassic, Oxfordonian, Oxford Clay
Location: Oxford
Out of stock
Stunning Cleoniceras ammonite specimens from Madagascar. These specimens have been polished helping to display their stunning suture lines which are highly visible on these ammonites. Cleoniceras is an extinct species of ammonite, dating to the lower Cretaceous period, over 102 million years ago. These specimens are available in three different sizes, and make a fantastic addition to any collection, whilst also being fantastic educational specimens on account of clearly showing the complex suture line of ammonites.
Small: Approx 10cm diameter
Medium: Approx 12cm diameter
Large: Approx 14cm diameter
Massive: Approx 17cm diameter
All measurements taken at the widest points
Species Name: Hoplosaphites sp.
Family: Ammonite
Age: Jurassic, Bajocian
Location: Normandy, France
Out of stock
Cut and polished ammonite pairs, collected from Madagascar. Ammonites are one of the most distinctive and popular fossils in the world due to their distinctive spiral shell. These specimens are examples of their shells that have been cut and polished in order to show their inner workings. These specimens include both Desmoceras and Cleoniceras which both lived during the Lower Cretaceous period, approximately 110 – 102 million years ago. Each section measures approximately 3cm and come packaged as a pair in a polythene bag with information label.
Cream coloured ammonites from Ilminster, Somerset, UK. Sizes vary between 1.5″ – 2″.
Out of stock
• Geological Age: Albian formation, Lower Cretaceous period, 110 to 102 million years old
• Location: Mahajanga Province, Madagascar
• Family: Ammanoid
• Species: Cleoniceras
Cleoniceras is an extinct species of ammonite, these fossil specimens are dated to the lower Cretaceous period, over 102 million years ago, they come from the Mahajanga Province, Madagascar, around 4 cm in size, polished and showing iridescence, they are suitable for older children, educational use and collectors, samples will come supplied in a polythene bag with label.
98 in stock
A cut and polished Dactiloceras specimen, from the Yorkshire Jurassic coast. Shows calcite infilling of the chambers. Size approx 5cm dia.
Out of stock
Species Name: Gulielmiceras gulielmi
Family: Ammonite
Age: Jurassic, Lower Lias
Location: Charmouth, Dorset
Out of stock
Species Name: Distichoceras bicostatum
Family: Ammonite
Age: Jurassic, Oxfordonian, 146 to 154 Million years old.
Location: Woodham, Buckinghamshire
Out of stock
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