Ammonite Collection (page 4)

Ammonite Pathology
Hildoceras serpentinum (Reinecke) Jurassic, Upper Toarcioan, Falcifer Zone, Airrault, near Poitiers, Charentes, France. indentations are signs of disease

Ammonite fossils C016 / 6000
Ammonite fossils. At left is an Aulacosphinctoides infundibulus ammonite that dates to the Lower Tithonian, and was found in Middle Spiti Shales, Niti Pass, Himalayas, Nepal

Devonian sea, artwork
Devonian sea. Computer artwork of 8-inch-long (20 cm) Doryaspis sp. jaw-less fish swimming amongst sea anemones (order Actiniaria), crinoids (feathery), sea stars, ammonites (upper left)

Ammonite fossils C015 / 3958
Ammonite fossils. Ammonites were marine invertebrates. They first appeared in the fossil record around 400 million years ago in the late Silurian and early Devonian periods

Ammonite fossils C016 / 5969
Ammonites fossils. Rock containing numerous Asteroceras sp. and Promicroceras sp. ammonites. Natural History Museum, London, UK

Snakestone ammonite C016 / 5999
Snakestone ammonite (Hildoceras bifrons) from the Jurassic Lias rocks of Yorkshire, UK. Natural History Museum, London, UK

Fossil ammonite C016 / 6079
Fossil ammonite (Hoplites sp.). This is a stongly-ribbed Cretaceous ammonite. This 7.8 centimetre wide specimen is from was found in Southern England. Natural History Museum, London, UK

Marine fossils, 18th century C015 / 6064
Marine fossils, 18th-century artwork. An ammonite is at lower right. Ammonites were marine invertebrate molluscs with a spiral shell

Ammonite and bivalve fossils C017 / 8487
Ammonite and bivalve fossils, exposed in a flat dolostone bed of coastal rocks. This specimen was found in the Kimmeridge Clay Formation, in Dorset, UK, part of the Jurassic Coast Heritage Site

Ammonite fossil C017 / 8486
Ammonite fossil, exposed in a flat dolostone bed of coastal rocks. Ammonites, now extinct, were marine invertebrate molluscs with a spiral shell, most less than 20 centimetres across

Ammonite fossil C016 / 5776
Ammonite (Aulacostephanus autissiodorensis) ammonite. This is an Upper Jurassic macroconch (larger form) ammonite. Despite some damage to the shell, the fine ribbing is still apparent

Ammonite fossil C016 / 5775
Ammonite (Aulacostephanus autissiodorensis) fossil. This is an Upper Jurassic microconch (small form) ammonite with lappets on the heavily ribbed shell

Nipponites, ammonoid fossil C016 / 4897
Nipponites, uncoiled ammonoid fossil. Ammonoids are an extinct group of marine fossil cephalopods related to todays Nautilus

Ammonite fossils C016 / 4870
Ammonite fossils. Ammonites, now extinct, were marine invertebrate molluscs with a spiral shell, most less than 20 centimetres across

Ammonite fossils, 18th century C013 / 7817
Ammonite fossils. 18th-century artwork of eleven ammonite and ammonoid fossil specimens. Engraving from The natural history of Northamptonshire (1712)

Ammonite fossils, 18th century C013 / 7816
Ammonite fossils. 18th-century artwork of several natural history specimens, including five ammonite fossils (spiral objects) and a nautilus (upper left, 5)

Ammonite memorial stone C013 / 6641
Ammonite memorial stone. Polished slab of marble containing Ammonite fossils. The large ammonites are Asteroceras marstonense, the small ammonites are Promicroceras marstonensis

Ammonite memorial stone C013 / 6642
Ammonite memorial stone. Slab of marble containing Ammonite fossils. The large ammonites are Asteroceras marstonense, the small ammonites are Promicroceras marstonensis

Maorites ammonite fossil C013 / 6619
Maorites densicostatus ammonite fossil. Ammonites were marine invertebrates. They first appeared in the fossil record around 400 million years ago in the late Silurian and early Devonian periods

The famous Ammonite design streetlghts in Lyme Regis, Dorset, England, United Kingdom, Europe

Psiloceras planorbis, nacreous ammonite
These specimens of Psiloceras planorbis are Britains earliest ammonites. Part of the William Smith collection

Brasilia bradfordensis, ammonite
This Middle Jurassic ammonite has been sectioned to show its chambers with calcite crystals formed in some and hardened mud in others. The body chamber is missing

Parkinsonia dorsetensis, ammonite
This ammonite has an evolute shell and is displaying complex suture lines. Specimen originates from the Middle Jurassic

Aegocrioceras quadratus, ammonite
This Lower Cretaceous crytocone ammonite displays whorls which do not touch each other but form an open spiral

Ichthyosaurus, Rhamphorhynchus, Plesiosaurus, Megalosaurus
Plate 82 Life on Jurassic Shores 165 Million Years Ago an illustration from Britain Before Man by F.W. Dunning et al (1978)

Plate 42 from Mineralogie Volume 1 (1790)
Coupe de la corne d ammons don?t chacunes des cazes, renferme une variete particuliere du Spath calcaire. From Recuille complet de Mineralogie? vol.1 (1790) by F.L. Swebach Desfontaines

Oxynoticeras oxynotum, ammonite
Shown here is the ventral view of this Lower Jurassic oxycone ammonite

Aulacostephanus autissiodorensis, ammonite
Shown here is an Upper Jurassic macroconch (larger form) ammonite. Despite some damage to the shell, the fine ribbing is still apparent

Dactylioceras commune, ammonite
This shows a Lower Jurassic snakestone from Whitby, Yorkshire, UK where a snakes head has been carved onto the ammonite

Dactylioceras commune, snakestone ammonite
Snakestone ammonite (Dactylioceras commune) (J. Sowerby) a lectotype specimen from Toarcian, Upper Liassic, Bifrons Zone, Whitby, U.k

Concretions with ammonites (saligrams)

Goniatites, fossil ammonite
In marked contrast to Dactylioceras, this Carboniferous Goniatites has a shell in which successive whols overlap stongly, giving a narrow, deep umbilicus

Wasatchites tridentinus, ammonoid
An extinct, marine fossil invertebrate with a heavily ribbed, coiled shell from the class Cephalopoda belonging in the phylum Mollusca (molluscs). Photographed by Beatriz Aguirre-Urreta

Gonioclymenia laevigata, ammonoid
An extinct, marine fossil invertebrate from the class Cephalopoda belonging in the phylum Mollusca (molluscs). Photographed by Beatriz Aguirre-Urreta

Dactylioceras, fossil ammonite
Dactylioceras, represented here by a 9.5 cm wide individual, is a characteristic and abundant ammonite in the Lower Jurassic of north Yorkshire, England

Prolecanites compressus, goniatite

Kosmoclymenia undulata, ammonoid
An extinct, marine fossil invertebrate from the class Cephalopoda belonging in the phylum Mollusca (molluscs). Photographed by Beatriz Aguirre-Urreta

Perisphinctes, ammonite
A Pyritised (golden cloured) ammonite from the Jurassic, Callovian, Jason Beds; Uetzing, Germany

Hoplites, fossil ammonite
Hoplites, a stongly-ribbed Cretaceous ammonite. This 7.8 cm wide specimen is from the Cretaceous of Southern England

Nostroceras, ammonite

Maorites densicostatus, ammonite
This flat-shelled ammonite dates from the Lower to Middle Campanian of the Upper Cretaceous, Vega Island, Graham Land, Antarctica

Virgatosphinctes, ammonite
Shown here is an Ammonite fossil recovered from over 5000m above sea-level in the Himalaya region

Ammonite, scaphites nodosus
A Cretaceous ammonite from Badlands, South Dakota, USA. This specimen retains much of its original shell giving it a beautiful pearly lustre

Promicroceras planicost, jurassic ammonites
A rock specimen containing many Promicroceras a small shelled Jurassic ammonites. Ammonites are an extinct group of marine fossil cephalopods related to todays Nautilus

Ceratites nodosus, ammonoid
The Ammonoids are an extinct group of marine fossil cephalopods related to todays Nautilus. In this specimen, the shell suture lines are clearly visible

Ammonite internal cast
Shown here is an internal cast of a Jurassic ammonite clearly depicting individually preserved chambers within the coiled shell

Stephanoceras humphriesianum, ammonite
This fossil cephalopod originates from the Inferior Oolite, Middle Jurassic rocks near Sherbourne, Dorset dating from about 170 million years ago

Kosmoceras acutistriatum, ammonite
This Jurassic ammonite from Wiltshire, England occurs in a fine-grained shale, but has been severely flattened. However, the original lustre of the shell has been retained

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"Journey through Time: Unveiling the Enigmatic Ammonite Fossils" Step into the fascinating world of ammonites, ancient marine creatures that once roamed our oceans millions of years ago. This captivating fossil, known as Desmoceras spp. , dates back to the Upper Early Cretaceous period during the Albian Stage in Mahajanga Province, Madagascar. Under UV light, these ammonite fossils reveal a mesmerizing display of vibrant colors and intricate patterns. It's like witnessing a hidden secret come to life. In 1862, British scientists first discovered these prehistoric wonders while exploring the depths of our planet's history. These reptilian beings coexisted with other marine species such as nautilus, as depicted in an enchanting engraving from that era. Ammonites were part of an extinct group of marine reptiles that thrived for millions of years before their mysterious disappearance. Asteroceras is another remarkable example showcasing their diverse forms and sizes. Cleoniceras sp. , another magnificent specimen found in Madagascar from the Cretaceous period, showcases its stunning beauty captured perfectly in Picture No. 10889717. Through advanced imaging techniques like SEM (Scanning Electron Microscope), we can delve deeper into understanding the intricate details preserved within each ammonite fossil. The delicate structures are truly awe-inspiring. This particular cross-section reveals a glimpse into their internal chambers and spiral-shaped shells—a testament to their evolution and adaptation over time. From Mahajanga Province to Russia, ammonites have left traces all around the globe—each telling its own unique story about Earth's ancient past. As we marvel at these extraordinary fossils today, let us reflect on how they connect us to a distant world long gone but forever imprinted in stone—the enigmatic legacy of ammonites endures.