Paleozoic Collection (page 3)

Platanaster ordovicus, starfish
This echinoid dates from the Ordovician period. Starfish belong to the Echinoderm spiney skinned and were mostly bottom dwellers. They are also characterised by five-fold symmetry

Neuropteris, seed fern
Shown here is the Carboniferous seed fern plant, Neuropteris

Didymograptus murchisoni, graptolite
This is an Ordovician tuning-fork shaped graptolite from Wales. Graptolites are an extict group of marine, colonial animals

Glossopteris linearis, fossil leaves
Fossil leaves which lived as a deciduous bushy plant, preserved on a bedding plane of Permian siltstone (Old Agfa film - not possible to duplicate)

Monograptus, graptolite
Shown here is Monograptus, a slender and delicate Silurian graptolite. Graptolites are the fossil remains of small colonial animals. Graptolite colonies were connected together by living tissue

Thursius pholidotus, fossil fish
This shows a Devonian fish originating from the Old Red Sandstone near Thurso, Scotland

Millstone Grit, Stanage Edge, Derbyshire
A Millstone Grit outcrop at Stanage Edge, Derbyshire. Old, discarded mill stone wheels can bee seen in the foreground

Sigillaria laevigata, fossil lycopod bark
This carboniferous fossilised lycopod (prehistoric spore-bearing plants) bark specimen is 9 cm long

Calymene blumenbachii, trilobites
Specimens of this Devonian trilobite in various positions. Trilobites had a carapace, or shell. Trilobites were arthropods as crustaceans, spiders and insects are today

Halysites escharoides, tabulate coral
In this Silurian tabulate coral from Ohio Falls, USA, large numbers of tiny oval corallites are linked together to form chains

Thursophyton elberfeldense
Massed stick-like stems of early land plants preserved in a fine-grained shale block, approx. 27 cm wide. Thursophyton elberfeldense fossil

Ordovician Britain
An artists impression of an eroded Ordovician (490 to 443 million years ago) volcano and shore line near Builth Wells, Powys

Orthoceras, nautiloid
Shown here is Orthoceras, a straight Ordovician nautiloid

Temnocrinus tuberculatus (Miller)
A fossil specimen of Temnocrinus tuberculatus (Miller), a paleozoic crinoid dating back to the Silurian (440 million years ago), discovered in the Wenlock Limestone bed, Dudley, Worcestershire, UK

Oldest rocks on Earth

Cheiracanthus murchisoni, fossil fish
This is an early jawed acanthodian fish from the Devonian rocks of Banffshire Scotland. Length 5 cms

Neuropteris, fossil plant
Neuropteris, a seed fern plant dating from the Carboniferous period

Arachnophyllum, coral
Image depicts an Arachnophyllum, a Silurian coral. Corals comprise a soft bodied animal called a polyp. Each polyp inhabits a calcareous skeleton called a corallum

Eusthenopteron foordi
A fossil specimen of the head and pectoral fin of Eusthenopteron foordi, an Upper Devonian reptile from Scaumenac Bay, P.Q. Canada

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

Eryops skeleton on display at the Natural History Museum, London. This creature was a carnivorous amphibian which lived in the Permian era about 250 million years ago

Calymene blumenbachii, trilobite
A well-known convex Silurian trilobite originating from Worcestershire, England. Trilobites were arthropods as crustaceans, spiders and insects are today

Permian Britain
An artists impression of Permian (290 to 248 million years ago) Britain from space, with desert lands and the Zechstein sea

Biceratops, trilobite
Biceratops, a Cambrian trilobite. Trilobites had a carapace, or shell was divided into three parts. Trilobites were arthropods as crustaceans, spiders and insects are today

Protaxocrinus tuberculatus (Miller)
A fossil specimen of Protaxocrinus tuberculatus (Miller), a crinoid, dating back to the Silurian period (440 million years ago), discovered in the Wenlock Limestone bed, Dudley, Worcestershire, UK

Bothriolepis canadensis, armoured fossil fish
This specimen is an amoured Devonian fish originating from Quebec

Cyathophyllum sp. rugose coral
Shown here is a section through a well preserved Devonian solitary, rugose coral from Devon, England. The maximum diameter is 6 cm

Myedactylus flecheri (Salter)
A fossil specimen of Myelodactylus fletcheri (Salter) dating back to the Silurian period (440 million years ago), discovered in Wenlock Limestone bed, Dudley, Worcestershire, UK

Fossilised millipede (Class Diplopoda)
This fossil is preserved in a siltstone nodule of Carboniferous age from the Yorkshire Coalfield. Length 63mm (unstraightened), length of nodule 76mm

Phacops rana, trilobite
A Devonian trilobite from Ontario, Canada. A convex trilobite with eleven thoracic segments; the eyes include a few very large lenses

Asteroxylon mackiei, clubmoss
A wax model reconstruction of the Early Devonian plant Asteroxylon mackiei, a clubmoss, approximately 10cm tall. Original specimen discovered at Rhynie Chert, Scotland

Glossopteris browniana
Fossil from Nagpur, India. Tongue-shaped leaves of the extinct Glossopteris are characteristic of the Permian and Triassic rocks of Gondwana. Specimen held at the Natural History Museum, London

Walchia piniformis
Leafy branch of the extinct Walchia piniformis from Montpellier, France dating from the Permian. Specimen held at the Natural History Museum, London

Neuropteris heterophylla
Fern like frond of the extinct gymnosperm from Clay Cross, Derbyshire, England dating from the Carboniferous. Specimen held at the Natural History Museum, London

Dactylotheca, fossil fern
Dactylotheca, a detail of the fronds of the Carboniferous seed fern

Fossil Sphenophyllum
Slender forest floor-dwelling or vining Sphenophyllum. Specimen disovered in Wales dating back to the Late Carboniferous period, 300 - 359 million years ago

Fossil leaves of Calamites
The leaves of Calamites were borne in whorls, approximately 15 mm in size. The species in this fossil specimen is Annularia radiata, discovered in Wales and dates back to the Late Carboniferous

Conodonts, tooth like fossils
These microscopic tooth like fossils are from the Ordovician period of the Ludlow area, Shropshire, UK about 420m yrs old (Magnification x 3.8)

Streptelasma, coral
A horn coral, the solitary rugosan Streptelasma from the Ordovician of the USA, measuring almost 4 cm in length

Halysites, chain coral
Part of a colony of the tabulate chain coral Halysites from the Silurian of Gotland, Sweden. The visible width of this specimen is 7 cm

Hemicyclaspis murchisoni and Thyestes egertoni, fossil fishe
Fossil fishes from the Devonian Period, found in Ledbury, Herefordshire. Specimens are on display at the Natural History Museum, London

Hydnoceras, a hexactinellid sponge
Over 17 cm tall, this natural cast of the hexactinellid sponge Hydnoceras comes from Devonian rocks of New York State

Hallopora, bryozoan
Branch, 15 mm high, of the trepostome bryozoan Hallopora, a genus particularly common in the Silurian which had bushy colonies when alive

Cyclacantharia, a fossil brachiopod
Two individuals of the peculiar Permian brachipod Cyclacantharia, each about 2 cm in diameter, showing the solitary coral-like shape and long supporting spines

Dictyonema flabelliforme, gaptolite
Shown here is an Ordovician dendroid graptolite, specimen originates from North Wales. Graptolites are the fossil remains of small colonial marine animals

Eurypterius lacustris, sea scorpion
This Devonian sea scorpion is preserved in fine siltstone and is from Canada. These predatory aquatic arthropods had a segemented, body large eyes and strong claws

Marrella splendens, lace crab
This is a small, aquatic arthropod originating from the Burgess Shale in Canada dating from the Middle Cambrian

Neuropteris heterophylla, fossil plant
This fossilised specimen of Neuropteris heterophylla is held at the Natural History Museum, London

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