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Marine | Shells | Mollusca

Discover wonderful 'fossil marine shells' in this category where you'll find some rather special selections, here we have a wide range of museum quality fossils for sale; Ammonites that sit elegantly in your living-space surmounted and classically displayed on our custom designed bronze plinths or wall features that transcend your personal style and passion for historic themes into reality. Discover a geological world of fossils including the prolific and stunning fossil pecten shells including many other molluscs and orthoceras specimens.

  1. Perisphinctes Ammonites 84mm

    Perisphinctes Ammonites 84mm

    £32.00
    Perisphinctes Ammonites 80mm is the average diameter or maximum width of the little cephalopods. The delightfully distinct detail of each ammonite makes these ammonoids very desirable and collectable. Suitable for any emerging palaeontologist or established collection, read the fuller history below... Perisphinctus; type Dichotomoceras, bifurcatus (M. Collignon, 1959) Subfamily: Perisphinctinae Family: Perisphinctidae Super family: Perisphinctoidea Age: Jurassic period, Callovian - Oxfordian stages: 166 to 163 million years ago. Origin: Tulear, Madagascar. Approximate average measurement. Diameter: 8 cm Approximate average weight: 400 g Learn More
  2. New Cleoniceras Sutured Ammonite 7

    Cleoniceras Sutured Ammonite 72mm

    £37.00
    A fine Cleoniceras sutured ammonite cleaned and preserved now the polished three-dimensional form of the fossilised shell that has fortuitously persisted in the fossil layers of Madagascar from the end of the Cretaceous period, some sixty-four million years ago. Read the full description below... You will receive a complimentary lucite stand with this item as well as free mainland delivery. Genus: Cleoniceras ammonite. Age: Cretaceous period. Origin: Mahajanga Jungle, Madagascar, South Indian Ocean Cleoniceras ammonite measurements. Diameter: 7.2 cm Weight: 0,098 g Learn More
  3. New Cenoceras Nautiloid 60mm

    Cenoceras Nautiloid 60mm

    £39.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Diameter: 6.0 cm Approximate weight: 0,105 g Learn More
  4. New Cenoceras Nautiloid 55mm

    Cenoceras Nautiloid 55mm

    £39.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Width: 5.5 cm Approximate weight: 0,078 g Learn More
  5. New Cenoceras Nautiloid 55mm

    Cenoceras Nautiloid 55mm

    £39.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Width: 5.5 cm Approximate weight: 0,073 g Learn More
  6. New Cenoceras Nautiloid 50mm

    Cenoceras Nautiloid 50mm

    £39.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Width: 5.5 cm Approximate weight: 0,070 g Learn More
  7. New Cenoceras Nautiloid 55mm

    Cenoceras Nautiloid 55mm

    £39.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Width: 5.5 cm Approximate weight: 0,080 g Learn More
  8. New Cenoceras Nautiloid 54mm

    Cenoceras Nautiloid 54mm

    £39.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Width: 5.5 cm Approximate weight: 0,072 g Learn More
  9. New Cleoniceras Sutured Ammonite 6

    Cleoniceras Sutured Ammonite 75mm

    £52.00
    A fine Cleoniceras sutured ammonite cleaned and preserved now the polished three-dimensional form of the fossilised shell that has fortuitously persisted in the fossil layers of Madagascar from the end of the Cretaceous period, some sixty-four million years ago. Read the full description below... You will receive a complimentary lucite stand with this item as well as free mainland delivery. Genus: Cleoniceras ammonite. Age: Cretaceous period. Origin: Mahajanga Jungle, Madagascar, South Indian Ocean Cleoniceras ammonite measurements. Diameter: 7.5 cm Weight: 0,110 g Learn More
  10. New Cleoniceras Sutured Ammonite 4

    Cleoniceras Sutured Ammonite 92mm

    £72.00
    A fine Cleoniceras sutured ammonite cleaned and preserved now the polished three-dimensional form of the fossilised shell that has fortuitously persisted in the fossil layers of Madagascar from the end of the Cretaceous period, some sixty-four million years ago. Read the full description below... You will receive a complimentary lucite stand with this item as well as free mainland delivery. Genus: Cleoniceras ammonite. Age: Cretaceous period. Origin: Mahajanga Jungle, Madagascar, South Indian Ocean Cleoniceras ammonite measurements. Diameter: 9.2 cm Weight: 0.197 g Learn More
  11. New Cleoniceras Sutured Ammonite 3

    Cleoniceras Sutured Ammonite 114mm

    £92.00
    The natural suture patterning is very delicate in this example and gives a marvellous contrast against the honey calcite colouration. The sutures frilly cream outlines also appear to give light and shading to the faces of the polished ammonite. A desirable Cleoniceras fossil ammonite from a classic fossil bed in Madagascar. Read the full description below... Genus: Cleoniceras ammonite, family Hoplitidae. Age: Albian 100 to 113 m.y.a., Cretaceous period 135 to 65 m.y.a Origin: N.E. Madagascar. E.Africa, South Indian Ocean Cleoniceras ammonite measurements. Diameter: 11.4 cm Weight: 0.255 g

    Supplied with acrylic stand and remember shipping to the United Kingdom mainland is included in the price.

    Learn More
  12. Cenoceras Nautiloid 105mm

    Cenoceras Nautiloid 105mm

    £112.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Diameter: 10.5 cm Approximate weight: 0,666 g Learn More
  13. New Cenoceras Nautiloid 104mm

    Cenoceras Nautiloid 104mm

    £122.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Diameter: 10.4 cm Approximate weight: 0.596 g Learn More
  14. New Cleoniceras Sutured Ammonite 2

    Cleoniceras Sutured Ammonite 133mm

    £132.00
    The natural suture patterning is vivid and creates a nice contrast for the honey calcite colouration. The sutures frilly cream outlines also appear to give light and shading to the faces of the polished ammonite. A desirable Cleoniceras fossil ammonite from a classic fossil bed in Madagascar. Read the full description below... Genus: Cleoniceras ammonite, family Hoplitidae. Age: Albian 100 to 113 m.y.a., Cretaceous period 135 to 65 m.y.a Origin: N.E. Madagascar. E.Africa, South Indian Ocean Cleoniceras ammonite measurements. Diameter: 13.3 cm Weight: 0.518 g Learn More
  15. Opal Cleoniceras Ammonite 76mm

    Opal Cleoniceras Ammonite 76mm

    £142.00
    Opalescent cleoniceras ammonite excavated in the Mahajanga jungle of Madagascar. A wonderful tropical island environment, in the Indian Ocean, off the coast of South East Africa. This Island having the most unusual flora and fauna is also blessed with unique deposit of the colourful fossils. Rich minerals have developed in the earths layers creating unique depositions of plentiful fossils, some outcrop and have in recent years have been harvested for there natural beauty. Read the full description below.... Genus: Cleoniceras ammonite. Hoplitidae. Age: Albian 100 to 113 m.y.a., Cretaceous period 135 to 65 m.y.a Origin: N.E. Madagascar. E.Africa, South Indian Ocean Cleoniceras ammonite measurements. Height: 7.6 cm Width: 6 cm Depth: 2 cm Approximate weight: 0,112 g Learn More
  16. New Cenoceras Nautiloid 103mm

    Cenoceras Nautiloid 103mm

    £142.00
    Both the Ammonites and Nautili evolved from cephalopod beginnings in the Cambrian period. The Ammonoid group eventually dominating the prehistoric marine environment, being free swimmers above the seabed, before the arrival of vertebrate fishes to the marine scene. Nautiloids having early success were later in the Cretaceous period seemingly in decline. The mass Cretaceous extinction, the KT boundary event, which is the marker for the extinction of dinosaurs and many other life forms gave the tenacious Nautili a chance to regain a secure foothold under the oceans. Read more of the Nautiloid story below… Genus: Cenoceras intermedius, Hyatt in 1884 (Sowerby), Nautiloid, Nautiloidea. Age: Triassic, Carnian age 228- 235 mya to Mid Jurassic, Callovian age 166 - 164 mya Location: Ambohimanga Rova, N.E. Antananarivo, Madagascar. Southern Indian ocean. Cenoceras Nautiloid measurement. Diameter: 10.3 cm Approximate weight: 0,618 g Learn More
  17. New Cleoniceras Ammonite Pair 204mm

    Cleoniceras Ammonite Pair 204mm

    £297.00
    A high quality conserved fossil Cleoniceras Ammonite from Madagascar. Prepared, cut into two halves with polished faces. The process revealing the wonders of mineralisation which takes place over millions of years. Each chamber has been replaced with Quartz and sedimentary silt now hardened or petrified. Ammonites are part of the Ammonitida of marine invertebrates. Read the full description below... Genus: Cleoniceras ammonite. Hoplitidae. Age: Albian 100 to 113 m.y.a., Cretaceous period 135 to 65 m.y.a Origin: N.E. Madagascar. E.Africa, South Indian Ocean Cleoniceras ammonite measurements. Diameter: 204 cm Approximate weight: 1,880 g Cleoniceras ammonite pairs include two acrylic stands for display. Learn More
  18. New Cleoniceras Ammonite Pair 1

    Cleoniceras Ammonite Pair 195mm

    £322.00
    A high quality conserved fossil Cleoniceras Ammonite from Madagascar. Prepared, cut into two halves with polished faces. The process revealing the wonders of mineralisation which takes place over millions of years. Each chamber has been replaced with Quartz and sedimentary silt now hardened or petrified. Ammonites are part of the Ammonitida of marine invertebrates. Read the full description below... Genus: Cleoniceras ammonite. Hoplitidae. Age: Albian 100 to 113 m.y.a., Cretaceous period 135 to 65 m.y.a Origin: N.E. Madagascar. E.Africa, South Indian Ocean Cleoniceras ammonite measurements. Diameter: 195 cm Approximate weight: 1,440 g Cleoniceras ammonite pairs include two lucite stands for display. Learn More
  19. New Cleoniceras Ammonite On Bronze 249mm

    Cleoniceras Ammonite On Bronze 249mm

    £392.00
    Exceptional quality Cleoniceras ammonite on a bronze plinth to museum standard. Post preparation now revealing the wonders of mineralisation, The absorption of the local environment’s mineral wealth, through a process of osmosis minerals transform the interior of the phragmocone (shell), when crystal's form through the action of imbuing, leaving mineral deposits, this enables the quartz in this instance to form and grow filling the chamber cavities. The process unfolds over a long period, eventually fossilising in millions of years during the metamorphism of the animal into a fossil. Read the full story below... Genus: Cleoniceras ammonite, Hoplitidae. Age: Albian stage, 100 to 113 m.y.a. Period: Cretaceous period, 135 to 65 m.y.a. Origin: N.E. Madagascar. E.Africa, South Indian Ocean Approximate Cleoniceras measurements. Height: 14.7 cm Width: 17.1 cm Depth: 1.9 cm Ammonite weight: 0.533 Kg On bronze stand measurements. Height: 24.9 cm Width: 17.1 cm Base Depth: 6.5 cm Approximate total weight: 0.773 Kg Learn More
  20. New Cleoniceras Ammonite On Bronze 211mm

    Cleoniceras Ammonite On Bronze 211mm

    £392.00
    Exceptional quality Cleoniceras ammonite on a bronze plinth to museum standard. Post preparation now revealing the wonders of mineralisation, The absorption of the local environment’s mineral wealth, through a process of osmosis minerals transform the interior of the phragmocone (shell), when crystal's form through the action of imbuing, leaving mineral deposits, this enables the quartz in this instance to form and grow filling the chamber cavities. The process unfolds over a long period, eventually fossilising in millions of years during the metamorphism of the animal into a fossil. Read the full story below... Genus: Cleoniceras ammonite, Hoplitidae. Age: Albian stage, 100 to 113 m.y.a. Period: Cretaceous period, 135 to 65 m.y.a. Origin: N.E. Madagascar. E.Africa, South Indian Ocean Approximate Cleoniceras measurements. Height: 21.1 cm Width: 17.9 cm Depth: 1.9 cm Ammonite weight: 0.554 Kg On bronze stand measurements. Height: 21.1 cm Width: 17.9 cm Base Depth: 5.0 cm cm Approximate total weight: 0.722 Kg Learn More
  21. Opal Cleoniceras Ammonite 130mm

    Opal Cleoniceras Ammonite 130mm

    £602.00
    Opalescent cleoniceras ammonite excavated in the Mahajanga jungle of Madagascar. The unrivalled tropical island environment, in the Indian Ocean, off the coast of South East Africa. The Island having the most unusual flora and fauna is also blessed with a unique deposit of colourful mineralised fossils. Rich minerals developing in the earths layers have created unequalled depositions of rare fossils, some outcrop and have in recent years have been harvested for there natural beauty. Read the full description below... Genus: Cleoniceras ammonite. Age: Cretaceous, approximately 120 million years ago. Origin: Mahajanga Jungle, Madagascar. Cleoniceras ammonite measurements. Height: 13 cm Width: 10.7 cm Depth: 3.6 cm Approximate weight: 0,533 g Learn More
  22. Opal Desmoceras Ammonite 92mm

    Opal Desmoceras Ammonite 92mm

    £692.00
    Opalescent Desmocera ammonite excavated in the Mahajanga jungle of Madagascar. The unrivalled tropical island environment, in the Indian Ocean, off the coast of South East Africa. The Island having the most unusual flora and fauna is also blessed with a unique deposit of colourful mineralised fossils. Rich minerals developing in the earths layers have created unequalled depositions of rare fossils, some outcrop and have in recent years have been harvested for there natural beauty. Read the full description below... Genus: Desmoceras ammonite. Age: Cretaceous, approximately 120 million years ago. Origin: Mahajanga Jungle, Madagascar. Desmoceras ammonite measurements. Height: 7.91 cm Width: 9.25 cm Depth: 3.83 cm Approximate weight: 0,297 g Learn More
  23. Cleoniceras Ammonite Pair 268mm

    Cleoniceras Ammonite Pair 268mm

    £792.00
    Exceptional quality Cleoniceras ammonite pair 268mm. this ammonite is from Madagascar and has been carefully prepared, cut in half and polished in work shops in Madagascar, thus revealing the wonders of per-mineralisation and mineralization which take place over tens of thousands even millions of years over the fossil process. Each inner chamber of the extinct marine cephalopod has been replaced with calcite and quartz. Cleoniceras ammonite pairs include two acrylic stands for display. Cleoniceras ammonite measurements. Height: 26.8 cm Width: 22.2 cm Depth: 2.8 cm Approximate weight: 3,690 Kg Learn More
  24. 20% off
    Opalescent Ammonites On Slate

    Opalescent Ammonites On Slate

    Regular Price: £992.00

    Special Price £792.00

    Opalescent cleoniceras ammonites excavated in the Mahajanga jungle of Madagascar. A wonderful tropical island environment, in the Indian Ocean, off the coast of South East Africa. This Island having the most unusual flora and fauna is also blessed with a unique deposit of the colourful fossils. Rich minerals have developed in the earth layers creating unique depositions of plentiful fossils, some outcrop and have in recent years have been harvested for there natural beauty. Read the full description below... Genus: Cleoniceras ammonite. Age: Cretaceous, approximately 120 million years ago. Origin: Mahajanga Jungle, Madagascar. Slate measurement as accented in the first main image. Width: 59.4 cm Height: 44.1 cm Depth: 6.7 cm Largest Specimen: 14.5 cm Medium Specimen 11.6 cm: Smallest Specimen: 6.7 cm Approximate weight: 13.8 kg Learn More
  25. New Cleoniceras Ammonite Pair on Bronze 241mm

    Cleoniceras Ammonite Pair on Bronze 241mm

    £1,292.00
    Exceptional quality Cleoniceras ammonite cut into two parts on surmounted bronze base to a museum standard exhibit. Post conservation and preparation now revealing the wonders of mineralisation of the localised fossil quartz and Jaspers contained within the earth in Madagascar. Read the full description below... Genus: Cleoniceras ammonite, Hoplitidae. Age: Albian stage, 100 to 113 m.y.a. Period: Cretaceous period, 135 to 65 m.y.a. Origin: N.E. Madagascar. E.Africa, South Indian Ocean Overall measurements. Height: 24.1 cm Width: 18.3 cm Depth: 6.5 cm Approximate total weight: 2,040 Kg Learn More
  26. New Cleoniceras Ammonite Pair on Bronze 236mm

    Cleoniceras Ammonite Pair on Bronze 236mm

    £1,392.00
    Exceptional quality Cleoniceras ammonite cut into two parts on surmounted bronze base to a museum standard exhibit. Post conservation and preparation now revealing the wonders of mineralisation of the localised fossil quartz and Jaspers contained within the earth in Madagascar. Read the full description below... Genus: Cleoniceras ammonite, Hoplitidae. Age: Albian stage, 100 to 113 m.y.a. Period: Cretaceous period, 135 to 65 m.y.a. Origin: N.E. Madagascar. E.Africa, South Indian Ocean Approximate ammonite measurements. Height: 14.5 cm Width: 17.6 cm Depth: 2.0 cm Approximate weight: 1,060 Kg Approximate measurements inc stands. Height: 23.6 cm Width: 17.6 cm Base Depth: 6.5 cm Approximate total weight: 1,578 Kg Learn More