British & USA Trilobite Fossils

The earliest trilobites known from the fossil record are redlichiids and ptychopariid bigotinids (yes try saying that after a drink or two) dated to some 540 to 520 million years ago. For such a long-lasting group of animals, it is no surprise that trilobite evolutionary history is marked by a number of extinction events where some groups perished while surviving groups diversified to fill ecological niches with comparable or novel adaptations. Generally, trilobites maintained high diversity levels throughout the Cambrian and Ordovician periods before entering a drawn-out decline in the Devonian culminating in final extinction of the last few survivors at the end of the Permian period.  Trilobite means "Three lobed".

Exactly why the trilobites became extinct is not clear; with repeated extinction events (often followed by apparent recovery) throughout the trilobite fossil record, a combination of causes is likely. After the extinction event at the end of the Devonian period, what trilobite diversity remained was bottlenecked into the order Proetida. Decreasing diversity of genera limited to shallow-water shelf habitats, coupled with a drastic lowering of sea level (regression) meant that the final decline of trilobites happened shortly before the end of the Permian mass extinction event. With so many marine species involved in the Permian extinction, the end of nearly 300 million successful years for the trilobite would not have been unexpected at the time. The closest extant relatives of trilobites may be the horseshoe crabs

British Trilobites
Most commonly available are Ogyginus, Ogygiocarella and Trinucleus from the Ordovician Welsh Mountains.

Ogygiocarella debuchi British Trilobite Og2

£6.99
Shop

Ogygiocarella debuchi British Trilobite Og5

£3.99
Shop

Ogygiocarella debuchi British Trilobite Og3

£5.99
Shop

Ogygiocarella debuchi British Trilobite Og11

£2.99
Shop

Ogygiocarella debuchi British Trilobite Og7

£3.99
Shop

Ogygiocarella debuchi British Trilobite Og22

£4.99
Shop

Ogygiocarella debuchi British Trilobite Og24

£3.99
Shop

Ogygiocarella debuchi British Trilobite Og27

£4.99
Shop

Ogygiocarella debuchi British Trilobite Og28

£6.99
Shop

Ogygiocarella debuchi British Trilobite Og26

£4.99
Shop

Ogygiocarella debuchi British Trilobite Og31

£6.99
Shop

Ogygiocarella debuchi British Trilobite Og32

£5.99
Shop

Ogyginus corndensis 100

£32.99
Shop

Ogyginus corndensis 102

£13.99
Shop

Ogyginus corndensis 105

£24.99
Shop

Ogyginus corndensis 104

£22.99

Sold out

Shop

Ogyginus corndensis 103

£14.99
Shop

Ogyginus corndensis 108

£18.99
Shop

Ogyginus corndensis 109

£8.99
Shop

Ogyginus corndensis 107

£18.99
Shop

Ogyginus corndensis 111

£16.99
Shop

Ogyginus corndensis 110

£14.99
Shop

Ogyginus corndensis 114

£15.99
Shop

Ogyginus corndensis 112

£18.99
Shop

British Trilobite Bt450

£3.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt454

£7.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt455

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt458

£2.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Negative impressions
​See photo for scale.
Shop

British Trilobite Bt459

£3.99
British Trilobite species:  Cnemidopyge nuda tail section
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt464

£3.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Negative
​See photo for scale.
Shop

British Trilobite Bt472

£8.99
British Trilobite species:  Cnemidopyge nuda negative impression
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt486

£10.99
British Trilobite species:  Ogyginus corndensis thorax and tail
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt487

£10.99
British Trilobite species:  Ogyginus corndensis thorax and tail
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt488

£8.99
British Trilobite species:  Ogyginus corndensis thorax and tail
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt400

£3.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See photo for scale.
Shop

British Trilobite Bt402

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See photo for scale.
Shop

British Trilobite Bt406

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobites
See photo for scale.
Shop

British Trilobite Bt407

£3.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Negative impression of trilobite (baby)
See photo for scale.
Shop

British Trilobite Bt408

£3.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Baby trilobite
See photo for scale.
Shop

On Sale

On Sale

British Trilobite Bt411

£16.99 £11.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Almost complete trilobite, repaired matrix
See photo for scale.
Shop

British Trilobite Bt417

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See photo for scale.
Shop

British Trilobite Bt418 Pos & Neg

£14.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Positive and Negative (Separate photos to show detail)
See photo for scale.
Shop

British Trilobite Bt423

£10.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Negative impression
​See photo for scale.
Shop

British Trilobite Bt426

£12.99

Sold out

British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt428

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt429

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt436

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt437

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt432

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt433

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt434

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt435

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt445

£5.99
British Trilobite species:  Bettonilithus chamberlani
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt444

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.
​See photo for scale.
Shop

British Trilobite Bt443

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt440

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  Partial
​See photo for scale.
Shop

British Trilobite Bt449

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
Shop

British Trilobite Bt180

£8.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt186

£7.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt185

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt183

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt181

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Negative impression of trilobite
See picture for scale
Shop

British Trilobite Bt190

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt189

£7.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt191

£7.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt196

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt194

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt205

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt204

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt199

£13.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Large disarticulated specimen
See picture for scale
Shop

British Trilobite Bt197

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

On Sale

On Sale

British Trilobite Bt198

£32.99 £19.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Large display specimen​
See picture for scale
Shop

British Trilobite Bt209

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt207

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt210

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt211

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt212

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt214

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt215

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt216

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt219

£8.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt220

£13.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt221

£9.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt222

£9.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt223

£9.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt224

£8.99

Sold out

British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt225

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt235

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Negative study sample​
See picture for scale
Shop

British Trilobite Bt234

£10.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt233

£10.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt229

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt230

£10.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt236

£8.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
Shop

British Trilobite Bt1

£12.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
Size of matrix: 5.5cm long
Shop

On Sale

On Sale

British Trilobite Bt2

£9.99 £6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
Size of matrix: 7.0cm long
Shop

British Trilobite Bt4

£12.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
Size of matrix: 5.0cm long
Shop

British Trilobite Bt10

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
Size of matrix: 5.0cm long
Shop

British Trilobite Bt19

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
Size of matrix: 5.0cm long
Shop

British Trilobite Bt14

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  
Size of matrix: 4.0cm long
Shop

On Sale

On Sale

British Trilobite Bt27

£16.99 £12.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
Size of matrix: 8.5cm long
Shop

British Trilobite Bt26

£10.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
Size of matrix: 8.0cm long
Shop

On Sale

On Sale

Ogyginus corndensis 403

£11.99 £8.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  
Size of trilobite: 3.5cm long on original matrix,
Shop

Ogyginus corndensis 390

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  
Size of trilobite: 1.7cm long on original matrix
Shop

Ogyginus corndensis T11

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   
Size of trilobite: 1.9cm long on original matrix, almost complete. 
Shop

Baby Ogyginus corndensis 4000

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
Size of trilobite: 0.7cm long on original matrix
Shop

On Sale

On Sale

Double Ogyginus corndensis 424

£18.99 £14.99
British Trilobite species:  Ogyginus corndensis ​
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
Size of trilobite: 2.5cm and 3.0cm long on original matrix
Shop

Negative Ogyginus corndensis 418

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Negative impression for study 
Size of trilobite: 2.5cm long on original matrix
Shop

USA Trilobites
Most commonly available species are Elrathia and Peronopsids (Itagnostus). All are Cambrian age.

Elrathia kingii Cambrian Trilobite USA 01

£14.99
Shop

Elrathia kingii Cambrian Trilobite USA 02

£16.99
Shop

Elrathia kingii Cambrian Trilobite USA 04

£14.99
Shop

Elrathia kingii Cambrian Trilobite USA 06

£15.99
Shop

Elrathia kingii Cambrian Trilobite USA 07

£16.99
Shop

Elrathia kingii Cambrian Trilobite USA 08

£12.99
Shop

Elrathia kingii Cambrian Trilobite USA 012

£17.99
Shop

Elrathia kingii Cambrian Trilobite USA 011

£16.99
Shop

Elrathia kingii Cambrian Trilobite USA 010

£15.99
Shop

Elrathia kingii Cambrian Trilobite USA 09

£16.99
Shop

Elrathia kingii Cambrian Trilobite USA 018

£16.99
Shop

Elrathia kingii Cambrian Trilobite USA 017

£16.99
Shop

Elrathia kingii Cambrian Trilobite USA 016

£15.99
Shop

Elrathia kingii Cambrian Trilobite USA 019

£14.99
Shop

Elrathia kingii Cambrian Trilobite USA 020

£14.99
Shop

Elrathia kingii Cambrian Trilobite USA 023

£5.99
Shop

Elrathia kingii Cambrian Trilobite USA 025

£7.99
Shop

Elrathia kingii Cambrian Trilobite USA 026

£6.99
Shop

Elrathia kingii Cambrian Trilobite USA 029

£6.99
Shop

Elrathia kingii Cambrian Trilobite USA 031

£6.99
Shop

Elrathia kingii Cambrian Trilobite USA 033

£7.99
Shop

Elrathia kingii Cambrian Trilobite USA 036

£7.99
Shop

Elrathia kingii Cambrian Trilobite USA 035

£4.99
Shop

Elrathia kingii Cambrian Trilobite USA 038

£6.99
Shop

Elrathia kingii Cambrian Trilobite USA 040

£8.99
Shop

Elrathia kingii Cambrian Trilobite USA 041

£7.99
Shop

Elrathia kingii Cambrian Trilobite USA 042

£6.99
Shop

Elrathia kingii Cambrian Trilobite USA 046

£17.99
Shop

Elrathia kingii Cambrian Trilobite USA 047

£21.99

Sold out

Shop

Elrathia kingii Cambrian Trilobite USA 049

£17.99
Shop

Elrathia kingii Cambrian Trilobite USA 051

£17.99
Shop

Elrathia kingii Cambrian Trilobite USA 056

£18.99
Shop

Elrathia kingii Cambrian Trilobite USA 055

£17.99
Shop

Elrathia kingii Cambrian Trilobite USA 054

£17.99
Shop

Elrathia kingii Cambrian Trilobite USA 052

£17.99
Shop

Elrathia kingii Cambrian Trilobite USA 053

£17.99
Shop