Ordovician · 485.4 – 443.8 Ma
Ordovician fossil sites
The Ordovician was a period of warm seas and explosive marine diversification. Trilobite morphology became extravagant; the first true reef-building corals appeared; nautiloid cephalopods grew to over five meters. The period ended with one of the largest mass extinctions in Earth's history.
Fossils typical of this period: trilobites, brachiopods, graptolites, nautiloids, early corals, crinoids.
13 fossil sites
Abereiddy Bay Fossil Hunting Guide
principally Didymograptus murchisoni (tuning-fork graptolite)
Graptolites, Trilobite, Abereiddy Formation, Pembrokeshire Coast National Park
Bou Dib Fossil Site North Jbel Isoumour Alnif Fossil Hunting Guide
Morocco
Bou Dib, Phacops, Brachiopods, Crinoid columnals
Caesar Creek State Park Fossil Hunting Guide
Ohio, United States
Trilobites, Brachiopods, Crinoids, Corals
Cowan Lake State Park Fossil Hunting Guide
Ohio, United States
Brachiopods, Crinoids, Corals, Horn Corals
Dobs Linn Scottish Borders Fossil Hunting Guide
United Kingdom
Graptolites
Draa Valley Ordovician Trilobite Site Agdz Fossil Hunting Guide
Morocco
Draa Valley Ordovician Trilobite Site, Giant trilobites, Brachiopods, Graptolite fragments
Druidston Haven Pembrokeshire Fossil Hunting Guide
United Kingdom
Graptolites, diplograptids, plant fossil impressions
East Fork State Park Fossil Hunting Guide
Ohio, United States
Trilobites, Brachiopods, Crinoids, Corals
Hueston Woods State Park Fossil Hunting Guide
Ohio, United States
Trilobites, Brachiopods, Crinoids, Corals
Jbel Tiskaouine Ordovician Trilobite Site Alnif Fossil Hunting Guide
Morocco
Jbel Tiskaouine, Flexicalymene, Colpocoryphe, Neseuretus
Lady Burn Fossil Hunting Guide
near Drummuck
Starfish, Trilobites, Brachiopods and bivalves, Orthocones and cephalopods
Ouzina Ordovician Graptolite Locality Fossil Hunting Guide
Morocco
graptolite fossils, Graptolites, Trilobites, Brachiopods
Trammel Fossil Park Fossil Hunting Guide
Ohio, United States
Trilobites, Brachiopods, Crinoids, Corals