Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.
RARE Paragarantiana alticostata Fossil Ammonite – Upper Bajocian, Jurassic, Eurecy Calvados France – Genuine + COA
£26.40Original price was: £26.40.£22.80Current price is: £22.80.
An exceptionally rare and scientifically significant Paragarantiana alticostata Fossil Ammonite, from the Upper Bajocian Stage of the Jurassic Period, collected near Eurecy, Calvados, Normandy, France. This ammonite features high, prominent ribbing and excellent preservation, making it a valuable specimen for collectors and biostratigraphers alike. The specimen shown in the photo is the exact one you will receive and comes with a Certificate of Authenticity.
Fossil Type & Species:
Type: Ammonite (extinct marine cephalopod)
Species:Paragarantiana alticostata
Order: Ammonitida
Superfamily: Stephanoceratoidea
Family: Stephanoceratidae
Geological Context:
Period: Jurassic
Epoch/Stage: Middle Jurassic – Upper Bajocian (approx. 170.3 to 168.3 million years ago)
Biozone: Likely from the Garantiana or Parkinsonia zone, common to ammonite-bearing strata in NW Europe
Formation: Bajocian sedimentary sequence of the Paris Basin (precise unit not confirmed)
Morphology & Features:
Evolute shell with broad umbilicus
Extremely high, sharply defined ribs that give the species its name “alticostata” (high-ribbed)
Strong bifurcation of ribs low on the flank
Ribs continue uninterrupted across the venter
Scientific Notes:
Paragarantiana alticostata is a zonally important species described during the refinement of Bajocian ammonite taxonomy in the 20th century
This genus is relatively rare and well-preserved examples are prized in biostratigraphic and museum collections
Notable Details:
Exceptional preservation; natural and unrestored
Scientifically informative and visually striking specimen
Scale Reference: Each square or cube = 1cm. See the image for exact fossil dimensions
Authenticity & Guarantee: All of our fossils are 100% genuine, professionally curated and responsibly sourced. A Certificate of Authenticity is provided with each item. You will receive the exact fossil shown.
This rare Paragarantiana alticostata ammonite is an outstanding piece for collectors, academic study, or display. A classic fossil from the richly fossiliferous marine strata of Jurassic Normandy.
An exceptionally rare and scientifically significant Paragarantiana alticostata Fossil Ammonite, from the Upper Bajocian Stage of the Jurassic Period, collected near Eurecy, Calvados, Normandy, France. This ammonite features high, prominent ribbing and excellent preservation, making it a valuable specimen for collectors and biostratigraphers alike. The specimen shown in the photo is the exact one you will receive and comes with a Certificate of Authenticity.
Fossil Type & Species:
Type: Ammonite (extinct marine cephalopod)
Species:Paragarantiana alticostata
Order: Ammonitida
Superfamily: Stephanoceratoidea
Family: Stephanoceratidae
Geological Context:
Period: Jurassic
Epoch/Stage: Middle Jurassic – Upper Bajocian (approx. 170.3 to 168.3 million years ago)
Biozone: Likely from the Garantiana or Parkinsonia zone, common to ammonite-bearing strata in NW Europe
Formation: Bajocian sedimentary sequence of the Paris Basin (precise unit not confirmed)
Morphology & Features:
Evolute shell with broad umbilicus
Extremely high, sharply defined ribs that give the species its name “alticostata” (high-ribbed)
Strong bifurcation of ribs low on the flank
Ribs continue uninterrupted across the venter
Scientific Notes:
Paragarantiana alticostata is a zonally important species described during the refinement of Bajocian ammonite taxonomy in the 20th century
This genus is relatively rare and well-preserved examples are prized in biostratigraphic and museum collections
Notable Details:
Exceptional preservation; natural and unrestored
Scientifically informative and visually striking specimen
Scale Reference: Each square or cube = 1cm. See the image for exact fossil dimensions
Authenticity & Guarantee: All of our fossils are 100% genuine, professionally curated and responsibly sourced. A Certificate of Authenticity is provided with each item. You will receive the exact fossil shown.
This rare Paragarantiana alticostata ammonite is an outstanding piece for collectors, academic study, or display. A classic fossil from the richly fossiliferous marine strata of Jurassic Normandy.
Additional information
Era
Jurassic
Origin
France
Jurassic Information
The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.
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