Ammonite - Fossil plate matrix - 22 cm - 18 cm
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Scientific name: Dactylioceras (genus), likely Dactylioceras commune or related species; Specimen: ammonite plate with multiple Dactylioceras; Geological Period: Early Jurassic (Toarcian) approximately 180–175 million years ago; Treatment: partially pyritised gilt/bronze impregnation on the fossils; Condition: natural, very good with no major breaks.
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Description from the seller
Lot:
Beautiful ammonite plate with multiple Dactylioceras from the Posidonia Shale (Lias epsilon)
Location: Dotternhausen, Germany
Geological era: Early Jurassic (Toarcian), ca. 180–175 million years old
Formation: Posidonienschiefer (Lias epsilon / Ölschiefer), classic bituminous slate with exceptional preservation
Description:
Nicely prepared fossil plate featuring diverse ammonites of the genus *Dactylioceras* (likely *Dactylioceras commune* and/or related species). The ammonites display the characteristic fine, radial ribs and are partly pyritized gilded / bronze-colored impregnated, creating a beautiful contrast against the pitch-black slate matrix.
On the plate are clearly visible:
- A large central ammonite (ca. 8–10 cm diameter) with complete whorls and richly detailed sculpture
- Several smaller specimens (ca. 3–6 cm) scattered across the plate, including partial impressions and cross-sections
- Subtle traces of organic remains and typical mass extinction-layer impression
The plate is professionally prepared, with a natural, irregular edge and an attractive composition – ideal as a decorative piece or for a collection.
Plate dimensions: 22 × 18 cm (height × width)
Thickness: ca. 1–2 cm (typical for these plates)
Condition: Very good – no major fractures, slight natural hairline cracks in the matrix (normal for Posidonia slate), ammonites sharp and intact
Origin: Classic German locality, legally mined and exported.
Beautiful piece for both beginner and advanced collectors of Jura ammonites. An iconic fossil from one of the world’s most famous lagerstätten!
Lot:
Beautiful ammonite plate with multiple Dactylioceras from the Posidonia Shale (Lias epsilon)
Location: Dotternhausen, Germany
Geological era: Early Jurassic (Toarcian), ca. 180–175 million years old
Formation: Posidonienschiefer (Lias epsilon / Ölschiefer), classic bituminous slate with exceptional preservation
Description:
Nicely prepared fossil plate featuring diverse ammonites of the genus *Dactylioceras* (likely *Dactylioceras commune* and/or related species). The ammonites display the characteristic fine, radial ribs and are partly pyritized gilded / bronze-colored impregnated, creating a beautiful contrast against the pitch-black slate matrix.
On the plate are clearly visible:
- A large central ammonite (ca. 8–10 cm diameter) with complete whorls and richly detailed sculpture
- Several smaller specimens (ca. 3–6 cm) scattered across the plate, including partial impressions and cross-sections
- Subtle traces of organic remains and typical mass extinction-layer impression
The plate is professionally prepared, with a natural, irregular edge and an attractive composition – ideal as a decorative piece or for a collection.
Plate dimensions: 22 × 18 cm (height × width)
Thickness: ca. 1–2 cm (typical for these plates)
Condition: Very good – no major fractures, slight natural hairline cracks in the matrix (normal for Posidonia slate), ammonites sharp and intact
Origin: Classic German locality, legally mined and exported.
Beautiful piece for both beginner and advanced collectors of Jura ammonites. An iconic fossil from one of the world’s most famous lagerstätten!
Details
Number of items
1
Specimen
Ammonite
Country of Origin
Germany
Geological Period
Jurassic, Lower (201.3 - 174.1 million years)
Condition
Natural
Weight
1333 g
Height
22 cm
Width
18 cm
Depth
2 cm
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