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.

Ogyginus corndensis 103

£14.99
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Ogyginus corndensis 114

£15.99
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Ogyginus corndensis 112

£18.99
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British Trilobite Bt400

£3.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See photo for scale.
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British Trilobite Bt402

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See photo for scale.
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British Trilobite Bt406

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobites
See photo for scale.
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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.
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British Trilobite Bt443

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. 
​See photo for scale.
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British Trilobite Bt180

£8.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt186

£7.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt185

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt183

£5.99

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British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt190

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt189

£7.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt191

£7.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt205

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt204

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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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
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British Trilobite Bt197

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt207

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt210

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt212

£4.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt214

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt215

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt216

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt219

£8.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt220

£13.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt222

£9.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt223

£9.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt225

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt229

£5.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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British Trilobite Bt236

£8.99

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British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.   Partial trilobite
See picture for scale
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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
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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
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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
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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
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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
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British Trilobite Bt14

£6.99
British Trilobite species:  Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.  
Size of matrix: 4.0cm long
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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
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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
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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
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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
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USA Trilobites
Most commonly available species are Elrathia and Peronopsids (Itagnostus). All are Cambrian age.

On Sale

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Elrathia kingii Cambrian Trilobite USA 02

£16.99 £13.59
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 07

£16.99 £13.59
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 08

£12.99 £10.39
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 011

£16.99 £13.59
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 019

£14.99 £11.99
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 020

£14.99 £11.99
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Elrathia kingii Cambrian Trilobite USA 036

£7.99
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Elrathia kingii Cambrian Trilobite USA 035

£4.99
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Elrathia kingii Cambrian Trilobite USA 038

£6.99
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Elrathia kingii Cambrian Trilobite USA 040

£8.99
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Elrathia kingii Cambrian Trilobite USA 042

£6.99
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 051

£17.99 £14.39
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 056

£18.99 £15.19
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On Sale

On Sale

Elrathia kingii Cambrian Trilobite USA 052

£17.99 £14.39
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