Ammonite Collection (page 2)

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

Rudgea eriantha
Finsihed watercolour drawing by Sydney Parkinson made during Captain James Cooks first voyage across the Pacific, 1768-1771. Illustration annotated Ceratites amoena

Ammonite selection
Three ammonites as follows: (Left to right) Oistoceras wrighti; Asteroceras obtusum (zonal index species); Tragophylloceras loscombi all specimens originate from the Jurassic rocks near Lyme Regis

Orthoconic nautiloid, originating from near Castleton, England. The more unusual straight-shelled species belonging to the same group as ammonites and to todays living nautilus

Asteroceras obtusum, ammonite
Shown here is a Jurassic ammonite. Ammonites are an extinct group of fossil cephalopods related to todays Nautilus

Asteroceras marstonensis and Promicroceras, ammonites

Ammonite 2011

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