14th International Symposium on the 
Ordovician System
July 15–26, 2023; Estonia and Sweden
in conjunction with 

The 3rd Annual Meeting of IGCP 735 and 
STRATI-2023 Ordovician Excursion

About Estonia

Estonia is located in northern Europe between Finland, Russia, Latvia and Sweden. With an area of 45,000 km² and a population of ca 1.3 million, it is one of the smallest countries in Europe. The official language is Estonian, a Fenno-Ugric language spoken by 1.1 million people. Estonia is a member of the European Union, the Eurozone, NATO, the OECD, and the Schengen Visa Area. 
Estonia is renowned for its econ omic and social freedom, sound education system, high level of digitisation and government e-services. The capital of Estonia is Tallinn, famous for its UNESCO World Heritage medieval old town. Tartu, the second largest city in the country, is best known for its university, established in 1632. Find out more at: https://estonia.ee, https://www.visitestonia.com.


Tallinn can be reached from many Eu ropean cities by direct flights or via nearby larger airports, particularly Helsinki, Stockholm and Riga. From Scandinavia and Central Europe, Estonia is also reachable by car or bus. For details, please consult: https://www.visitestonia.com/en/travel-here-around/travel-to-estonia
Please check if you need a visa for Schengen Area and contact the organisers in advance should you need an official invitation


Conference  participants are responsible for arranging accommodation for the entire period of stay, including the pre-conference excursion. A variety of hotels and other types of accommodation is available at https://booking.com, with the usual price range from EUR 50 to EUR 250 per night.  

Conference venue

The scientific sessions will take place at the Astra Building of Tallinn University, located in Tallinn City Centre (address : Narva mnt 29), within walking distance from the historical Old Town, various hotels, restaurants, and the Baltic Sea. 

Conference dinner and spouse activities

The conference dinner will take place on July 20, 2023. The place will be announced in the Third Circular. Note that the Conference Dinner is not included in the registration fee in most cases.
Spouse activities will be organised for the period of scientific sessions if there is interest. Please indicate your interest in the registration form. 

Visit geological collections of Estonia

Large collections of Baltic Ordovician fossils and rocks are kept at the Department of Geology Tallinn University of Technology, the Estonian Museum of Natural History and at the Natural History Museum, University of Tartu (in Tartu, 180 km South of Tallinn). Participants of the conference are welcome to arrive earlier or leave later, in order to study these collections. Please contact the corresponding curators at your earliest convenience, but no later than May 1, 2023, to ensure the availability of the material. Data on many collection specimens, samples, localities etc have been digitised and made accessible online in the national geoscience data portal: https://geoloogia.info. Contact:
     Ursula Toom, Department of Geology, Tallinn University of Technology (ursula.toom@taltech.ee)
     Mare Isakar, Natural History Museum, Tartu University (mare.isakar@ut.ee)
     Karin Truuver, Estonian Museum of Natural History (karin.truuver@loodusmuuseum.ee

Visit geological collections in Sweden

The main collections of Swedish Palaeozoic fossils and rocks are kept at the Museum of Evolution at Uppsala University, the Swedish Geological Survey (also in Uppsala) and the Swedish Museum of Natural History in Stockholm. Participants of the conference are welcome to study these collections. Please contact the corresponding curators at your earliest convenience, but no later than May 1, 2023, to ensure the availability of the material. 
     Jan Ove R. Ebbestad, Museum of Evolution, Uppsala University (jan-ove.ebbestad@em.uu.se)
     Linda Wickström, Geological Survey of Sweden (Linda.Wickstrom@sgu.se)
     Jonas Hagström, Swedish Museum of Natural History, Stockholm (jonas.hagstrom@nrm.se

Scientific committee

David A. T. Harper (Durham University)
Lars Holmer (Uppsala University)
Petr Kraft (Charles University)
Thomas Servais (CNRS-Université de Lille)
Zhan Renbin (Nanjing Institute of Geology and Palaeontology)