Description
A rare and scientifically important Hemitetagonites crebiscutatum Fossil Ammonite, from the Albian Stage of the Cretaceous Period, collected in Madagascar. This unusual ammonite represents a distinctive genus with striking ribbing patterns, making it a superb specimen for collectors of rare Cretaceous fossils. The exact specimen shown in the photographs is the one you will receive, and it comes with a Certificate of Authenticity.
Fossil Type & Species:
- Type: Ammonite (extinct marine cephalopod)
- Species: Hemitetagonites crebiscutatum
- Order: Ammonitida
- Superfamily: Acanthoceratoidea
- Family: Brancoceratidae
Geological Context:
- Period: Cretaceous
- Epoch/Stage: Lower Cretaceous – Albian (approx. 113 to 100.5 million years ago)
- Biozone: Often associated with mid- to late-Albian ammonite assemblages used for zonal correlation
- Depositional Environment: Shallow epicontinental seas with fine calcareous sediments, favourable for ammonite fossilisation
Locality:
- Region: Madagascar (exact formation not specified, but part of Madagascar’s well-known Albian marine fossil deposits)
Morphology & Features:
- Moderately evolute shell with a wide umbilicus
- Strong ribbing, often crowded and branching, extending continuously across the venter
- Robust, discoidal whorls with well-marked ornamentation
- Distinctive high rib density gives the species its recognisable appearance
Scientific Notes:
- Hemitetagonites crebiscutatum was first described by Stoliczka (1863) during his pioneering work on Cretaceous ammonites of southern Asia, later identified in Madagascar deposits
- It is considered a key ammonite species for correlation within the Albian stage across the Tethyan realm
Notable Details:
- Excellent preservation of ribbing and overall shell form
- Completely natural, unrestored specimen
- Scale Reference: Each square or cube in the photo = 1cm. Please see images for accurate fossil dimensions
Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. A Certificate of Authenticity is included with your purchase. The fossil shown is the exact specimen you will receive.
This Hemitetagonites crebiscutatum ammonite is a rare and scientifically valuable fossil from Madagascar, making it a perfect addition to advanced collections or natural history displays.
Reviews
There are no reviews yet.