Description
This listing features a stunning 4-inch specimen of the ammonite Mortoniceras wintoni, collected from the Duck Creek Formation, dating to the Upper Albian Stage of the Cretaceous period. This fossil was discovered in Spring Creek, Cooke County, Texas, USA – a locality highly regarded for its well-preserved mid-Cretaceous marine fossils.
The species Mortoniceras wintoni is characterised by its evolute shell, bold ribbing, and strong ventrolateral tubercles, often forming spiral ridges. These features are typical of ammonites adapted to shallow marine environments within the Western Interior Seaway.
Geological & Scientific Details:
- Species: Mortoniceras wintoni
- Family: Brancoceratidae
- Superfamily: Acanthoceratoidea
- Order: Ammonitida
- Geological Period: Cretaceous
- Geological Stage: Upper Albian
- Formation: Duck Creek Formation
- Location: Spring Creek, Cooke County, Texas, USA
- Depositional Environment: Shallow marine – part of the Western Interior Seaway
- Morphology Features: Evolute coiling, sharp ribbing, pronounced ventrolateral tubercles, and moderately inflated shell
Why This Specimen Stands Out:
- Rare 4″ Mortoniceras wintoni ammonite fossil
- Excellent preservation of species-defining features
- Clear ornamentation and spiral tubercles
- Sourced from a classic fossil-rich Texas formation
- A valuable addition to any fossil collection or teaching display
- Photo shows the exact specimen you will receive
- Includes Certificate of Authenticity
Scale Reference: Scale Rule Squares / Cube = 1cm – Please refer to the photo for full sizing.
Shipping & Packaging:
- Securely packed to ensure safe delivery
- Tracked international shipping available
This ammonite represents an important stage in ammonoid evolution during the mid-Cretaceous and is a well-preserved example of a key index fossil used in stratigraphic correlation.
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
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