Rare Block of Fossil Heteromorph Uncoiled Ammonites (Turrilitoides hugardianus) with Gastropod – Upper Cenomanian, Upper Cretaceous

Description

A rare fossil block containing heteromorph uncoiled ammonites (Turrilitoides hugardianus) with a gastropod, from the Upper Cenomanian Stage of the Upper Cretaceous, collected at Pénzesgyőr, Hungary. This specimen is highly collectable, preserving ammonites with their distinctive uncoiled morphology alongside a marine gastropod, making it a unique palaeontological display. The fossil shown in the photographs is the exact one you will receive, and it is supplied with a Certificate of Authenticity.

Fossil Type & Species:

• Type: Heteromorph Ammonite (extinct marine cephalopod) with Gastropod
• Species: Turrilitoides hugardianus
• Order: Ammonitida
• Superfamily: Turrilitoidea
• Family: Turrilitidae

Geological Context:

• Period: Cretaceous
• Epoch/Stage: Upper Cretaceous – Upper Cenomanian (approx. 100.5 to 93.9 million years ago)
• Biozone: Typically associated with Mantelliceras dixoni and related ammonite faunas of the Cenomanian
• Formation: Cenomanian marine limestone and marl deposits of Hungary
• Depositional Environment: Shallow marine shelf with carbonate sediments, producing excellent preservation of heteromorph ammonites

Locality:

• Region: Pénzesgyőr, Hungary

Morphology & Features:

• Turrilitoides hugardianus exhibits a tightly uncoiled, helically twisted shell form
• Fine ribbing and distinctive ornamentation across the shell
• Accompanied by a preserved gastropod shell, showing natural association of marine organisms
• Excellent preservation of both ammonite and gastropod features

Scientific Notes:

• Turrilitoides hugardianus is an iconic Cenomanian heteromorph ammonite, first formally described in the 19th century
• Its unusual uncoiled morphology provides important insights into ammonite adaptation and palaeoecology during the Late Cretaceous

Notable Details:

• Rare fossil block preserving both ammonites and gastropod together
• Excellent natural preservation with strong morphological detail
• 100% genuine, natural fossil – no restoration
• Scale Reference: Each square or cube = 1cm. Please see photographs for accurate sizing

Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Each specimen is supplied with a Certificate of Authenticity. The fossil pictured is the exact one you will receive.

This Turrilitoides hugardianus fossil block with gastropod is a rare and scientifically valuable specimen from the Upper Cenomanian of Hungary – an exceptional addition for collectors, researchers, or natural history displays.