Description
DESMOCERAS (Latidorsatum) Fossil Ammonite – Lower Albian Stage, Early Cretaceous, Analalava Region, Madagascar
This beautifully preserved fossil ammonite belongs to Desmoceras (Latidorsatum), a subgenus of the genus Desmoceras, and is dated to the Lower Albian stage of the Early Cretaceous, approximately 113 to 109 million years ago. Recovered from the marine limestone beds of Analalava, Madagascar, this specimen reflects the elegance and evolutionary refinement of Cretaceous cephalopods.
Fossil Type & Species:
- Type: Invertebrate Fossil (Ammonite Shell)
- Genus/Subgenus: Desmoceras (Latidorsatum)
- Order: Ammonitida
- Superfamily: Desmoceratoidea
- Family: Desmoceratidae
- Described by: Pervinquière, 1907 (for Madagascan material)
Geological & Stratigraphic Details:
- Location: Analalava, northwestern Madagascar
- Formation: Albian marine limestones and marly sequences
- Geological Stage: Lower Albian (Early Cretaceous)
- Age: ~113–109 million years ago
- Biozone: Albian ammonite-bearing strata (subzone not formally assigned)
- Depositional Environment: Warm, shallow marine carbonate platform with calm sedimentation and rich ammonoid fauna
Morphology & Features: This Desmoceras (Latidorsatum) specimen shows:
- Moderately involute, planispiral shell with a compressed to subglobular whorl section
- Smooth flanks with weak ornamentation or growth lines
- Venter (outer edge) slightly rounded to flattened, often subtly keeled
- Symmetrical coiling with visible suture patterns in polished or eroded areas
- Colour tones range from pale beige to deep brown, sometimes polished to reveal internal structure
Notable: Desmoceras is a genus widely distributed in the Cretaceous seas and plays an important role in biostratigraphic correlations. The subgenus Latidorsatum is known for its elegant shell proportions and is commonly found in Madagascan Albian deposits. Its widespread occurrence and refined morphology make it a desirable fossil for collectors and educators alike.
Specimen Details:
- Origin: Analalava Region, Madagascar
- Species/Subgenus: Desmoceras (Latidorsatum)
- Fossil Type: Ammonite Shell (Invertebrate)
- Geological Stage: Lower Albian, Early Cretaceous
- Size Reference: Scale rule square = 1cm (please refer to listing photo for full dimensions)
- Note: The specimen in the photos is the exact fossil you will receive
Authenticity & Quality: This fossil is professionally selected and verified. It is 100% genuine and comes with a Certificate of Authenticity. No artificial restoration or enhancement has been applied.
Why Choose This Fossil? Perfect for:
- Fossil collectors and ammonite enthusiasts
- Educational use and palaeontology study
- Decorative natural history display
- Gifts for science and geology lovers
Shipping & Packaging: Securely packed with eco-conscious materials and dispatched quickly with tracking. We ensure your fossil arrives in excellent condition.
Add a graceful example of Early Cretaceous marine life to your collection with this authentic Desmoceras (Latidorsatum) ammonite from Analalava, Madagascar.
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
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