Description
This listing features a rare and scientifically notable ammonite fossil of the species Coulinoceras cauroceras, from the Lower Cenomanian stage of the Cretaceous period, discovered near Fort Worth, Texas, USA. This genus is highly valued for its distinct morphological features and North American palaeogeographic significance.
Coulinoceras cauroceras is a moderately involute ammonite with sharply defined ribbing and a compressed whorl section. These fossils represent a transitional form in mid-Cretaceous cephalopod evolution and are especially sought after by collectors and palaeontologists due to their occurrence in well-dated Cenomanian marine strata.
Geological & Scientific Details:
- Genus: Coulinoceras
- Species: Coulinoceras cauroceras
- Phylum: Mollusca
- Class: Cephalopoda
- Subclass: Ammonoidea
- Order: Ammonitida
- Superfamily: Acanthoceratoidea
- Family: Acanthoceratidae
- Geological Stage: Lower Cenomanian (Early Late Cretaceous)
- Age: ~100.5–93.9 million years ago
- Locality: Fort Worth, Texas, USA
- Depositional Environment: Epicontinental marine shelf
- Morphology Features: Sharp ribbing, slightly compressed shell, distinct keel
- Biozone: Possibly associated with the Mantelliceras mantelli biozone depending on local stratigraphy
- Notable: North American ammonite genus first recognised from classic Cretaceous sections
Why This Specimen Stands Out:
- Rare ammonite species from a historically significant fossil region
- Displays excellent morphological preservation and rib pattern
- A perfect piece for collectors, educators, or research use
- Supplied with a Certificate of Authenticity
Scale Reference:
Scale Rule Squares / Cube = 1cm – Please refer to the photo for full sizing. The image shows the exact specimen you will receive.
Shipping & Packaging:
- Securely and professionally packaged
- Tracked international shipping available
A superbly preserved ammonite fossil from the classic Cretaceous rocks of Texas—an exceptional find for serious fossil enthusiasts.
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
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