Description
A rare and scientifically significant Parkinsonia pachypleura Fossil Ammonite, from the Bajocian Stage of the Jurassic Period, collected at Stoke Kemp, Beaminster, Dorset, United Kingdom. This ammonite is a fine representative of the genus Parkinsonia, with well-defined ribbing and excellent preservation. The exact fossil pictured is the one you will receive, and it comes with a Certificate of Authenticity.
Fossil Type & Species:
- Type: Ammonite (extinct marine cephalopod)
- Species: Parkinsonia pachypleura
- Order: Ammonitida
- Superfamily: Stephanoceratoidea
- Family: Parkinsoniidae
Geological Context:
- Period: Jurassic
- Epoch/Stage: Middle Jurassic – Bajocian (approx. 170.3 to 168.3 million years ago)
- Biozone: Likely within the Parkinsonia pachypleura Subzone of the Parkinsonia Zone, used in European Bajocian stratigraphy
- Depositional Environment: Shallow marine shelf with alternating marls and limestones, highly favourable for ammonite preservation
Locality:
- Region: Stoke Kemp, Beaminster, Dorset, United Kingdom
- Formation: Bajocian sedimentary successions of the Dorset coast (exact stratigraphy unconfirmed)
Morphology & Features:
- Evolute shell with moderately wide umbilicus
- Strongly ribbed flanks with bifurcating ribs
- Rounded venter with uninterrupted ribbing
- Diagnostic morphology characteristic of Parkinsonia pachypleura
Scientific Notes:
- Parkinsonia pachypleura is a zonally important ammonite, frequently used for detailed biostratigraphic correlation in Bajocian marine deposits of NW Europe
- Originally described by Sowerby in the 19th century
Notable Details:
- Outstanding preservation of ribs and whorl structure
- 100% natural, with no restoration
- Scale Reference: Each square or cube in the image = 1cm. Please refer to the photo for accurate fossil size
Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and include a Certificate of Authenticity. The fossil you see in the photos is the exact specimen you will receive.
This Parkinsonia pachypleura ammonite is both scientifically valuable and visually impressive – an excellent addition for fossil collectors, educators, or display.







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