Rare MYLOCERAS SEROTINUM Heteromorph Ammonite – Albian Cretaceous, Morocco

Description

Offered here is a rare and scientifically notable heteromorph ammonite fossil, MYLOCERAS SEROTINUM, from the Albian Stage of the Cretaceous Period. This authentic fossil was sourced from Cretaceous marine deposits in Morocco, a region known for its rich fossil fauna and exceptional preservation.

Taxonomic Classification:

• Order: Ammonitida
• Superfamily: Ancyloceratoidea
• Family: Ancyloceratidae
• Genus & Species: Myloceras serotinum

Geological Context:

• Period: Cretaceous
• Stage: Albian (approximately 113–100.5 million years ago)
• Depositional Environment: Shallow to moderately deep marine shelf. Fine-grained marl and limestone beds provided excellent fossilisation conditions. These ammonites lived in open marine waters and were likely nektonic or planktonic in lifestyle.

Morphological Features:

• Characteristic heteromorph form with initial coiled whorls followed by straight or loosely curved shaft segments
• Pronounced ribbing and ornamentation across the shell, with well-preserved suture lines in quality specimens
• Adaptations may have been linked to changes in buoyancy, hydrodynamics, or ecological niches compared to planispiral ammonites

Scientific Importance:

• Myloceras serotinum is part of a distinctive lineage of heteromorph ammonites that flourished during the mid-Cretaceous
• This genus helps define biozones and evolutionary transitions during the Albian, and reflects morphological diversity in ammonite shell development

Locality Information:

• Morocco – a globally important site for Cretaceous marine fossils. The fossiliferous layers here provide insight into the evolution and distribution of ammonites in the southern Tethyan margin.

Authenticity & Display:

All of our fossils are 100% Genuine Specimens and come with a Certificate of Authenticity. The photos in this listing show the exact fossil specimen you will receive. The scale rule cube = 1cm, and full sizing is shown in the images.

This fossil is a carefully selected piece, chosen for its rarity and display quality. It is an ideal addition for collectors of ammonites, heteromorph forms, or Cretaceous marine life.

Own a remarkable and unusual piece of natural history from over 100 million years ago—an enduring testament to the diversity of ancient life in Earth’s oceans.