Description
Authentic Mazon Creek Fossil Fern – Neuropteris
This listing features a genuine Mazon Creek fossil fern, beautifully preserving the delicate foliage of the genus Neuropteris. Dating from the Carboniferous Period (around 307–309 million years ago), this specimen comes from the world-famous Mazon Creek fossil beds of Illinois, USA. The fossil has been naturally preserved in a siderite nodule, which split open to reveal the striking impression of the ancient plant. The photographs show the exact piece you will receive, and a Certificate of Authenticity accompanies the fossil for complete confidence in its genuineness.
Geological Context
- Geological Period: Carboniferous (Pennsylvanian Subperiod)
- Age: ~307–309 million years ago
- Formation: Francis Creek Shale, Carbondale Formation
- Location: Mazon Creek, Illinois, USA
The Mazon Creek beds are considered one of the most important fossil sites in the world. These nodules form in ancient deltaic and lagoonal environments where rapid burial preserved plants and animals with exceptional detail. The site is world-renowned as a Lagerstätte, a deposit with unusually fine preservation of both flora and fauna.
Scientific Classification
- Kingdom: Plantae
- Division: Pteridospermatophyta (Seed Ferns)
- Order: Medullosales
- Genus: Neuropteris
Neuropteris is not a true fern but a seed fern, an extinct group of plants that reproduced with seeds rather than spores. Its elegant, fern-like foliage makes it one of the most recognisable and collectible fossils from the Carboniferous coal forests.
Morphological Features
This specimen shows the key diagnostic features of Neuropteris:
- Frond Structure: Large, bipinnate fronds with elongated pinnules.
- Pinnules: Almond-shaped with smooth, curved margins.
- Venation: A strong central vein with fine lateral veins extending outward in a net-like pattern.
- Surface Detail: Clear, sharp impressions that display the natural beauty of the ancient foliage.
These features allow paleobotanists to identify Neuropteris and distinguish it from other Carboniferous ferns such as Pecopteris or Mariopteris.
Paleoenvironment and Significance
During the Carboniferous, vast swampy forests dominated the equatorial regions of the Earth. These coal-forming environments were rich with tree-sized lycopsids, horsetails, true ferns, and seed ferns like Neuropteris. The lush vegetation contributed to the massive coal deposits that define the Carboniferous name (“coal-bearing”).
The Mazon Creek flora provides a detailed snapshot of this world, showing how early plant ecosystems were structured. Neuropteris fossils are highly valued for their scientific importance and aesthetic appeal, representing an extinct lineage of plants that bridged the evolutionary gap between primitive ferns and later seed-bearing plants.
Key Details
- Specimen Type: Fossil fern (Neuropteris) preserved in siderite nodule
- Age: Carboniferous (~307 million years old)
- Formation: Francis Creek Shale
- Location: Mazon Creek, Illinois, USA
- Authenticity: 100% genuine with Certificate of Authenticity
- Size: Please see scale photo with 1cm cube for accurate dimensions
Collectability and Display
Mazon Creek Neuropteris fossils are highly collectible due to their clarity, rarity, and importance in paleobotany. Each specimen is a one-of-a-kind natural artwork, capturing a moment in prehistoric time when lush forests covered much of the Earth.
Whether you are a fossil enthusiast, paleobotany student, or collector of rare natural history specimens, this Neuropteris fossil represents an exceptional opportunity to own a genuine piece of Carboniferous forest history preserved for over three hundred million years.






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