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Heliophyllum halli Fossil Coral – Middle Devonian Hamilton Shale – Arkona Ontario Canada – Genuine Fossil with Certificate
£9.00 Original price was: £9.00.£8.10Current price is: £8.10.
This listing features a genuine fossil of Heliophyllum halli, a solitary rugose coral from the Middle Devonian period, recovered from the Hamilton Shale of Arkona, Ontario, Canada. Known commonly as a “horn coral”, Heliophyllum halli is one of the most iconic solitary corals of the Devonian seas. The photo shows the exact specimen you will receive, and a 1cm scale cube is included for accurate sizing – please refer to the image for full dimensions.
Fossil Details:
- Type: Fossil Rugose Coral (Horn Coral)
- Species: Heliophyllum halli
- Order: Rugosa
- Family: Zaphrentidae
- Phylum: Cnidaria
- Kingdom: Animalia
- Formally Described By: Milne-Edwards & Haime, 1851
Geological & Stratigraphic Context:
- Geological Period: Devonian
- Epoch: Middle Devonian
- Formation: Hamilton Group – Arkona Shale Member
- Biozone (where applicable): Mucrospirifer and Phacops rana are commonly associated taxa
- Location: Arkona, Lambton County, Ontario, Canada
- Depositional Environment: Shallow, warm marine shelf environment with mudstones, shales, and carbonate lenses reflecting a calm, offshore setting rich in marine fauna
Morphology & Notable Features:
- Distinctive conical shape with radial septa visible in transverse cross-section
- Cup-shaped calice often preserved with internal detail
- Surface may display costae (external ribs) and septal grooves from the polyp’s skeletal walls
- Solitary coral, not part of a colony—typical of rugose corals during this time
- Frequently found associated with brachiopods, trilobites, and bryozoans of the Arkona Shale
Scientific Significance:
- Heliophyllum halli is an important guide fossil for correlating Middle Devonian marine strata in North America
- It is one of the most studied solitary corals from the Hamilton Group and provides insight into reef and benthic ecosystems of the Devonian
- Excellent example of early coral reef biodiversity and skeletal development
Why Buy From Us?
- All fossils are 100% genuine, responsibly collected
- Includes a Certificate of Authenticity
- Exact specimen pictured – no substitutes
- Perfect for fossil collectors, educators, and palaeontology enthusiasts
This impressive Heliophyllum halli horn coral fossil from the Middle Devonian Hamilton Shale of Arkona, Canada is a scientifically important and visually striking specimen, ideal for display or educational use.
(Actual as seen)
Only 1 left in stock
Description
This listing features a genuine fossil of Heliophyllum halli, a solitary rugose coral from the Middle Devonian period, recovered from the Hamilton Shale of Arkona, Ontario, Canada. Known commonly as a “horn coral”, Heliophyllum halli is one of the most iconic solitary corals of the Devonian seas. The photo shows the exact specimen you will receive, and a 1cm scale cube is included for accurate sizing – please refer to the image for full dimensions.
Fossil Details:
- Type: Fossil Rugose Coral (Horn Coral)
- Species: Heliophyllum halli
- Order: Rugosa
- Family: Zaphrentidae
- Phylum: Cnidaria
- Kingdom: Animalia
- Formally Described By: Milne-Edwards & Haime, 1851
Geological & Stratigraphic Context:
- Geological Period: Devonian
- Epoch: Middle Devonian
- Formation: Hamilton Group – Arkona Shale Member
- Biozone (where applicable): Mucrospirifer and Phacops rana are commonly associated taxa
- Location: Arkona, Lambton County, Ontario, Canada
- Depositional Environment: Shallow, warm marine shelf environment with mudstones, shales, and carbonate lenses reflecting a calm, offshore setting rich in marine fauna
Morphology & Notable Features:
- Distinctive conical shape with radial septa visible in transverse cross-section
- Cup-shaped calice often preserved with internal detail
- Surface may display costae (external ribs) and septal grooves from the polyp’s skeletal walls
- Solitary coral, not part of a colony—typical of rugose corals during this time
- Frequently found associated with brachiopods, trilobites, and bryozoans of the Arkona Shale
Scientific Significance:
- Heliophyllum halli is an important guide fossil for correlating Middle Devonian marine strata in North America
- It is one of the most studied solitary corals from the Hamilton Group and provides insight into reef and benthic ecosystems of the Devonian
- Excellent example of early coral reef biodiversity and skeletal development
Why Buy From Us?
- All fossils are 100% genuine, responsibly collected
- Includes a Certificate of Authenticity
- Exact specimen pictured – no substitutes
- Perfect for fossil collectors, educators, and palaeontology enthusiasts
This impressive Heliophyllum halli horn coral fossil from the Middle Devonian Hamilton Shale of Arkona, Canada is a scientifically important and visually striking specimen, ideal for display or educational use.
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