RARE 4" Parkinsonia planulata Fossil Ammonite – Lower Bathonian, Jurassic, Calvados France – Genuine + COA
£ 60.00
A rare and finely preserved Parkinsonia planulata Fossil Ammonite, measuring
approximately 4 inches (10 cm) in diameter, from the Lower Bathonian Stage of the Jurassic Period, discovered in Calvados, Normandy, France. This elegant ammonite is a textbook example of the genus and is supplied with a Certificate of Authenticity. The actual fossil shown in the image is the exact one you will receive.Fossil Type & Species:
• Type: Ammonite (extinct marine cephalopod)
• Species: Parkinsonia planulata
• Order: Ammonitida
• Superfamily: Stephanoceratoidea
• Family: ParkinsoniidaeGeological Context:
• Period: Jurassic
• Epoch/Stage: Middle Jurassic – Lower Bathonian (approx. 168.3 to 166.1 million years ago)
• Biozone: Parkinsonia planulata Zone – this species is the index fossil for its zone
• Depositional Environment: Shallow marine environment with calcareous muds, typical of epicontinental seas – ideal for ammonite preservationLocality:
• Region: Calvados, Normandy, France
• Formation: Bathonian marine limestones and marls of the Paris Basin (specific formation unconfirmed)Morphology & Features:
• Large, moderately evolute shell with finely ribbed flanks
• Strong but elegant radial ribs bifurcating from the umbilical shoulder
• Flat to slightly convex flanks with a broad, rounded venter
• Well-developed suture lines typical of the genusScientific Notes:
• Parkinsonia planulata was formally described by Sowerby in 1822
• This species is biostratigraphically significant as it defines the planulata zone, a key marker across European Bathonian sections
• Representative of the more ornate and widespread Middle Jurassic ammonitesNotable Details:
• Excellent preservation and diagnostic ribbing
• No restoration or composite parts – 100% natural
• Scale Reference: Each square or cube = 1cm. Full sizing shown in the listing imageAuthenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. A Certificate of Authenticity is included with your purchase. Add this scientifically valuable and display-worthy ammonite to your collection. It represents a key part of Middle Jurassic ammonoid evolution and is ideal for collectors, educators, or natural history enthusiasts.
approximately 4 inches (10 cm) in diameter, from the Lower Bathonian Stage of the Jurassic Period, discovered in Calvados, Normandy, France. This elegant ammonite is a textbook example of the genus and is supplied with a Certificate of Authenticity. The actual fossil shown in the image is the exact one you will receive.Fossil Type & Species:
• Type: Ammonite (extinct marine cephalopod)
• Species: Parkinsonia planulata
• Order: Ammonitida
• Superfamily: Stephanoceratoidea
• Family: ParkinsoniidaeGeological Context:
• Period: Jurassic
• Epoch/Stage: Middle Jurassic – Lower Bathonian (approx. 168.3 to 166.1 million years ago)
• Biozone: Parkinsonia planulata Zone – this species is the index fossil for its zone
• Depositional Environment: Shallow marine environment with calcareous muds, typical of epicontinental seas – ideal for ammonite preservationLocality:
• Region: Calvados, Normandy, France
• Formation: Bathonian marine limestones and marls of the Paris Basin (specific formation unconfirmed)Morphology & Features:
• Large, moderately evolute shell with finely ribbed flanks
• Strong but elegant radial ribs bifurcating from the umbilical shoulder
• Flat to slightly convex flanks with a broad, rounded venter
• Well-developed suture lines typical of the genusScientific Notes:
• Parkinsonia planulata was formally described by Sowerby in 1822
• This species is biostratigraphically significant as it defines the planulata zone, a key marker across European Bathonian sections
• Representative of the more ornate and widespread Middle Jurassic ammonitesNotable Details:
• Excellent preservation and diagnostic ribbing
• No restoration or composite parts – 100% natural
• Scale Reference: Each square or cube = 1cm. Full sizing shown in the listing imageAuthenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. A Certificate of Authenticity is included with your purchase. Add this scientifically valuable and display-worthy ammonite to your collection. It represents a key part of Middle Jurassic ammonoid evolution and is ideal for collectors, educators, or natural history enthusiasts.
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