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.
British Trilobite Bt454
£7.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.
See photo for scale.
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.
See photo for scale.
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.
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.
See photo for scale.
British Trilobite Bt400
£3.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See photo for scale.
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See photo for scale.
British Trilobite Bt402
£6.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See photo for scale.
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See photo for scale.
British Trilobite Bt406
£4.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobites
See photo for scale.
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobites
See photo for scale.
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.
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Positive and Negative (Separate photos to show detail)
See photo for scale.
British Trilobite Bt180
£8.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt186
£7.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt185
£6.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt183
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt190
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt189
£7.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt191
£7.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt196
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt194
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt205
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt204
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Large disarticulated specimen
See picture for scale
British Trilobite Bt197
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Large display specimen
See picture for scale
British Trilobite Bt207
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt210
£6.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt211
£6.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt212
£4.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt214
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt215
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt216
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt219
£8.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt220
£13.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt222
£9.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt223
£9.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt225
£5.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
British Trilobite Bt234
£10.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
See picture for scale
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
Size of matrix: 5.5cm long
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.
Size of matrix: 7.0cm long
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
Size of matrix: 5.0cm long
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
Size of matrix: 5.0cm long
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
Size of matrix: 5.0cm long
British Trilobite Bt14
£6.99
British Trilobite species: Ogyginus corndensis
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.
Size of matrix: 4.0cm long
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales.
Size of matrix: 4.0cm long
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
Size of matrix: 8.5cm long
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
Llanvirn Series, Llandrindod Wells. Location: Powys, Mid Wales. Partial trilobite
Size of matrix: 8.0cm long
USA Trilobites
Most commonly available species are Elrathia and Peronopsids (Itagnostus). All are Cambrian age.
