Trilobitomorpha Collection

Calymene blumenbachii brongniart, trilobite
This trilobite originates from the 425 million year old Devonian Wenlock Limestone, Dudley, Worcestershire

Phacops, a fossil trilobite
This Moroccan Devonian Phacops is enrolled, measuring 4.5 cm in width, and has a glabella covered in tubercles

Dalmanites, a fossil trilobite
This example of the Silurian trilobite Dalmanites, 4.2 cm long, shows to perfection the complex dorsal exoskeleton of these extinct arthropods

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

Locust trilobite fossils C016 / 5993
Locust tribolite (Calymene blumenbachii) fossils from Wenlock Limestone, Dudley, West Midlands. They date to the Silurian (period. Natural History Museum, London, UK

Calymene blumenbachii, trilobite model
Depicted here is a model of a Silurian-Devonian trilobite. Trilobites had a carapace, or shell. They were arthropods as crustaceans, spiders and insects are today

Ogygiocaris, a fossil trilobite
Complete specimen of the Welsh Ordovician trilobite Ogygiocaris, measuring 3.8 cm in length and showing the three-lobed dorsal exoskeleton

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

Erbenochile erbeni (Alberti)
Tower-Eyed Trilobite from the Timrahrhart Formation, Morocco

Trimerus, a fossil trilobite
Fully preserved, 10 cm long specimen of the Silurian trilobite Trimerus

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

Tower-eye trilobite fossil C016 / 6222
Tower-eye trilobite (Erbenochile erbeni) fossil. This specimen is from the Timrahrhart Formation, Morocco. Natural History Museum, London, UK

Tower-eye trilobite fossil C016 / 6149
Tower-eye trilobite (Erbenochile erbeni) fossil. This specimen is from the Timrahrhart Formation, Morocco. Natural History Museum, London, UK

Tower-eye trilobite fossil C016 / 6221
Tower-eye trilobite (Erbenochile erbeni) fossil. This specimen is from the Timrahrhart Formation, Morocco. Natural History Museum, London, UK

Tower-eye trilobite fossil C016 / 6220
Tower-eye trilobite (Erbenochile erbeni) fossil. This specimen is from the Timrahrhart Formation, Morocco. Natural History Museum, London, UK

Trilobite fossil C016 / 5617
Trilobite (Calymene sp.). Trilobites are among the earliest fossils known and ranged from the Lower Cambrian (540 million years ago) to the Lower Permian (285 million years ago)

Stalk-eyed trilobite fossil C016 / 5560
Stalk-eyed trilobite (Asaphus kowalewskii). A complete 3-dimensional stalk-eyed trilobite fossil measuring approximately 5 centimetress, discovered at Wolchow River, near St. Petersburgh, Russia

Encrinurus punctatus, trilobite fossils C016 / 4927
Encrinurus punctatus, trilobite fossils. Block of rock containing several fossils of the trilobite Encrinurus punctatus. Encrinurus had eyes on stalks

Cambrian trilobites from the Falkland Islands
Trilobites from a cobble of archaeocyathan limestone from Port Purvis: PS 218, specimen number NHM PI PO 12074 in the collection of the Palaeontological Department of The Natural History Museum

Agnostid trilobite of Cambrian age, found in deep water. It is a blind trilobite of only a few millimetres long, with only two thoracic segments

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

Elrathia kingii, trilobites
Elrathia kingii in rock matrix, from Middle Cambrian, Wheeler Shale, House Range, Utah, USA

John William Salter (1820-1869)
Portrait of John William Slater, a geologist and palaeontologist for the Geological Survey. He worked on the classification of trilobites

Phacops rana africanus, trilobite
This trilobite shown in the balled position originated from the Devonian period c. 380-370 million years ago, in the Tifariti area, Spain

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

Calymene, trilobite
This specimen dates from the Middle Silurian, Worcestershire. Trilobites are among the earliest fossils known and ranged from the Lower Cambrian (540 million years ago)

Wanneria walcottana, trilobite

Leonaspis coronata, trilobite
One of the smaller trilobites growing to a maximum length of 2cm. The spines have been well-preserved in this specimen

Acidaspis coronata, spiny trilobite
A spiny odontopleurid Silurian trilobite from Worcestershire, England preserved in limestone. The specimen length is 2.5 cms

Encrinurus punctatus, trilobites
A specimen of rock containing several fossils of the Trilobite Encrinurus punctatus. Encrinurus had eyes on stalks and grew to a size of approximatey 5cm

Angelina, stretched trilobite
Angelina grew up to a length of 6cm. The thorax was made up of 15 segements with spines. Trilobites were arthropods and had exoskeletons as crustaceans, spiders and insects do today

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

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

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

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

Naraoia compacta, trilobite

Butterfly stone Hu-die-shih trilobites
Trilobite Drepanura; inferred Upper Cambrian, Shantung Province, China. Mounted slab from Keeper?s Meeting Room

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

Dalmanites myops, trilobite
A Silurian fossil trilobite from the Wenlock Limestone, Dudley, Worcestershire. This specimen measures 40mm head to tail

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Trilobitomorpha, a fascinating group of ancient arthropods, includes various species that roamed the Earth millions of years ago. One such species is Calymene blumenbachii brongniart, a trilobite known for its distinctive features and intricate exoskeleton. Another notable member is Phacops, a fossil trilobite whose well-preserved remains provide valuable insights into the past. Dalmanites, another fossil trilobite, showcases the diversity within Trilobitomorpha with its unique characteristics. Asaphus (Neoasaphus) kowalewskii stands out among its counterparts due to its remarkable stalked eyes—a striking adaptation in this ancient creature's evolutionary journey. Ogygiocaris represents yet another intriguing example of a fossil trilobite. Its fossils offer glimpses into an era long gone and help scientists piece together the puzzle of our planet's history. Dorsal and ventral views of Isotelus platycephalus reveal different aspects of this particular trilobite's anatomy. These specimens allow researchers to study their morphology in detail and gain further understanding about their way of life. Erbenochile erbeni (Alberti), an impressive member of Trilobitomorpha, captivates with its intricate exoskeleton design. The delicate patterns preserved in these fossils showcase nature's artistic touch from eons ago. Trimerus adds to the richness within this group as it provides paleontologists with invaluable information about prehistoric ecosystems and how these creatures interacted with their environment. Encrinurus variolaris presents yet another stunning example within Trilobitomorpha—its beautifully preserved exoskeleton serves as evidence for the incredible diversity that once thrived on our planet.