Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.
Dichotomoceras antecedens Fossil Ammonite – Oxfordian Jurassic – Tulear Madagascar – Genuine Specimen with Certificate
£14.40
Offered here is a genuine Dichotomoceras antecedens fossil ammonite from the Oxfordian Stage of the Upper Jurassic, discovered in the renowned fossil-rich region of Tulear, Madagascar. This is a real and scientifically notable ammonite, showcasing the beautifully complex ribbing typical of the genus.
Fossil Type: Ammonite (extinct marine cephalopod)
Species: Dichotomoceras antecedens
Geological Period: Jurassic
Geological Stage: Oxfordian (~163.5 to 157.3 million years ago)
Locality: Tulear (Toliara), Madagascar
Scientific and Geological Information:
Order: Ammonitida
Superfamily: Perisphinctoidea
Family: Perisphinctidae
Morphology Features:
Strongly evolute shell structure with all whorls visible
Distinctive bifurcating ribs that branch symmetrically across the shell
Medium-sized planispiral coiling, typically with a deep umbilicus
Depositional Environment:
Formed in warm, shallow marine waters with excellent sedimentation conditions
Ammonites of this region are often found in finely laminated limestones and marls
Biozone:
Associated with the mid to late Oxfordian ammonite zones, though exact subzone for D. antecedens varies across global stratigraphic records
Notable:
Dichotomoceras antecedens is an early representative of its genus, distinguished by more primitive ribbing and shell form
Ammonites from Tulear are known for their preservation and ornamental appeal
Identification:
Described in scientific literature during studies of Upper Jurassic ammonite faunas of the southern Tethyan realm
Why This Fossil is Important:
A true Jurassic ammonite from a classic and highly sought-after locality
Offers both visual appeal and scientific relevance
Ideal for educational collections, display, or investment in natural history
Each fossil is carefully selected for quality and authenticity
Additional Details:
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
Scale Rule Squares / Cube = 1cm: Full sizing please see photo
The photograph in the listing shows the exact fossil you will receive
Offered here is a genuine Dichotomoceras antecedens fossil ammonite from the Oxfordian Stage of the Upper Jurassic, discovered in the renowned fossil-rich region of Tulear, Madagascar. This is a real and scientifically notable ammonite, showcasing the beautifully complex ribbing typical of the genus.
Fossil Type: Ammonite (extinct marine cephalopod)
Species: Dichotomoceras antecedens
Geological Period: Jurassic
Geological Stage: Oxfordian (~163.5 to 157.3 million years ago)
Locality: Tulear (Toliara), Madagascar
Scientific and Geological Information:
Order: Ammonitida
Superfamily: Perisphinctoidea
Family: Perisphinctidae
Morphology Features:
Strongly evolute shell structure with all whorls visible
Distinctive bifurcating ribs that branch symmetrically across the shell
Medium-sized planispiral coiling, typically with a deep umbilicus
Depositional Environment:
Formed in warm, shallow marine waters with excellent sedimentation conditions
Ammonites of this region are often found in finely laminated limestones and marls
Biozone:
Associated with the mid to late Oxfordian ammonite zones, though exact subzone for D. antecedens varies across global stratigraphic records
Notable:
Dichotomoceras antecedens is an early representative of its genus, distinguished by more primitive ribbing and shell form
Ammonites from Tulear are known for their preservation and ornamental appeal
Identification:
Described in scientific literature during studies of Upper Jurassic ammonite faunas of the southern Tethyan realm
Why This Fossil is Important:
A true Jurassic ammonite from a classic and highly sought-after locality
Offers both visual appeal and scientific relevance
Ideal for educational collections, display, or investment in natural history
Each fossil is carefully selected for quality and authenticity
Additional Details:
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
Scale Rule Squares / Cube = 1cm: Full sizing please see photo
The photograph in the listing shows the exact fossil you will receive
Additional information
Era
Jurassic
Origin
Madagascar
Jurassic Information
The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.
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