Ordovician Collection

Asaphus (Neoasaphus) kowalewskii, stalk- eyed trilobite
A complete 3-dimensional stalk-eyed trilobite measuring about 5 cms, discovered at Wolchow River, near St. Petersburgh, Russia. The specimen dates back to the Middle Ordovician period

Dorsal & Ventral Isotelus platycephalus
Syntype (?Holotype by monotypy) of Asaphus, now Isotelus platycephalus (Stokes, 1824) Ordovician, Black River Group; St Josephs Island, Lake Huron, Ontario Bigsby Colln. Date: 1824

Crystal apple - cystoid echinoderm
NHM E10. Echinosphaerites aurantium (Gyllenhall). Ordovicain, Popouka, St Petersburg, Russia

Remopeurides, a fossil trilobite
Probably planktonic, Remopeurides is a small trilobite - this Scottish Ordovician example being less than 2 cm long - with an inflated glabella

Didymograptus, fossil graptolite
The two tuning-fork graptolite on this piece of Welsh Ordovician shale belong to the genus Didymograptus and have branches some some 5 cm in length with sawtooth-like thecae

Chasmatopora furcata eichwald, bryozoan
This bryozoa specimen is 470-458 million years old, dating from the Middle Ordovician period, Kuckersits, Estonia

Cothurnocystis elizae Bather, carpoid
The carpoids were a member of the Echinoderms. Specimen dates from the Upper Ordovician, Armillan Series, Drummuck Group Starfish Bed. Ayrshire c. 449m yrs old

Trinucleus, a fossil trilobite
The pitted cephalic fringe is clearly seen in this 1.3 cm wide specimen of Trinucleus from the Ordovician of Wales

Trinodus, a fossil trilobite
Measuring less than a cm, this Scottich Ordovician trilobite Trinodus has a much reduced thorax between the larger head and cephalon

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

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

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

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

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

Trinucleus, trinucleid trilobite
This Trinucleid trilobite grew up to 3cm long. Specimen originating from Ordovician rocks of Builth, Wales

Didymograptus, graptolite
Didymograptus, Ordovician tuning-fork planktonic graptolites. Graptolites are an extinct group of marine, colonial animals

Ordovician seascape
An artists impression of the Eden Valley, Cumbria in the Ordovician period (490 to 443 million years ago), with volcanoes in the sea

Evolution of Face
How the human face has evolved since life as we know it began in the form of the Ordovician Shark, evolving through reptiles to primates and so to you and me

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