Ammonoid Collection

Extinct marine reptiles
Sheet 1 of a series of posters called Extinct Animals by Benjamin Waterhouse Hawkins c. 1862. This collection of marine reptiles lived during the Jurassic period between 200

Asteroceras, fossil ammonite
A 16 cm diameter specimen of the Jurassic ammonite Asteroceras from the Lower Jurassic of Dorset, England

Cretaceous chalk seafloor
An artists impression of a Cretaceous (144 to 65 million years ago) hard chalk seafloor, where an ammonite floats above crinoids, sea urchins, brachiopods, molluscs, and a lobster

Plesiosaurus, Telesaurus, Ichthyosaurus, Pentacrinites, Ammo
Sheet 1 of a series of posters called Extinct Animals by Benjamin Waterhouse Hawkins c. 1862. This collection of marine reptiles lived during the Jurassic period between 200 and 145 million years ago

Nipponites mirabilis, ammonite
This ammonite from the Upper Cretaceous of Japan displays a loose, tangled coil

Chalk sea diorama
Diorama of Cretaceous (144 to 65 million years ago) sea floor chalk deposits, and various cephalopods

Rasenia uralensi, ammonite
A fossil ammonite from the Upper Jurassic, Kimmeridge clay, Market Rasen, Lincolnshire. An ammonite has a coiled, chambered shell and is an extinct mollusc

Fossils of extinct cephalopods and ammonoids.. Handcolored lithograph from Dr. F.A. Schmidts Petrefactenbuch, published in Stuttgart, Germany, 1855 by Verlag von Krais & Hoffmann. Dr

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

Ammonite marble
Asteroceras (large shells) and Promicroceras (small shells) ammonites, seen here in the polished surface of a specimen of marble originating from the Lower Lias, near Yeovil, Somerset

Carboniferous limestone sea
Bridget Kempsters impression of a shallow coral Carboniferous (354 to 290 million years ago) limestone sea, depicting fish and an abundance of crinoids and coral

Asteroceras and promicroceras, ammonites
A rock specimen containing Asteroceras (large shell) and Promicroceras (small shell) ammonites from the Lower Lias, Marston Magna, near Yeovil, Somerset

Nipponites, uncoiled ammonoid
An uncoiled Nipponite ammonoid fossil. Ammonoids are an extinct group of marine fossil cephalopods related to todays Nautilus

Gastrioceras, goniatite
Gastrioceras, a Carboniferous goniatite. Goniatites were highly mobile creatures similar to octopus and squid, but were protected by a coiled shell divided up into many chambers

Hildoceras bifrons, snakestone ammonite
A snakestone ammonite (Hildoceras bifrons) from the Jurassic Lias rocks of Yorkshire, U.K

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

A fossil Kosmoceras, ammonite
Kosmoceras, a genus of ammonite which lived during the Jurassic period

Goniatites sp. goniatite
An extinct, marine fossil goniatite from the class Cephalopoda belonging in the phylum Mollusca (molluscs), sub-class Ammonoidea. Photographed by Beatriz Aguirre-Urreta

Scaphites nodosus, ammonite
This Cretaceous ammonite originates from The Badlands, South Dakota, U.S.A. This specimen retains much of its original shell giving it a beautiful pearly lustre

William Buckland (1784-1856)
Print annotated in pencil Dr Buckland Dean of Westminster. Buckland was an English geologist and palaeontologist, who wrote the first full account of a fossil dinosaur

Fossil ammonites used as memorial stone
Asteroceras marstonense (larger ammonites) and Promicroceras marstonensis (smaller ammonites) used as a memorial stone. Specimen originates from Spath Lower Lias, Marston Magna, Somerset, England

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