The OpenUp! Network - an international collaboration of some of the most outstanding Natural History and Science Museums, Botanical Gardens and University Collections worldwide.
Our partner institutions from many countries across Europe and beyond provide millions of records with multimedia objects from the field of natural history to Europeana.
BROWSE OpenUp! Data at www.europeana.eu!
The OpenUp! Natural History Aggregator encourages all kinds of natural history or scientific institutions to join and share their collections with the world.
Especially for smaller or medium size institutes we offer tailored support, a helpdesk and training events.
OpenUp! is accredited Natural History Aggregator for Europeana, coordinated by AIT-Graz (Angewandte Informationstechnik Forschungsgesellschaft mbH) and the Botanic Garden und Botanical Museum Berlin (BGBM), Freie Universität Berlin.
For more information on Biodiversity & Europeana, digital heritage and capacity building please visit the OpenUp! Knowledge Space!
archived 
Co-financed by the Connecting Europe Facility
of the European Union (CEF)
By June 2018 Naturalis, one of the biggest players in digitized natural history, has openened up a huge part of their collections, making them discoverable via Europeana. Have a try at Europeana sources:
https://www.europeana.eu/portal/de/explore/sources.html
The Naturalis collections, divided into the categories botany, geology, vertebrates, invertebrates, entomology, books and type catalogues, can also be explored on the Naturalis BioPortal of Dutch natural history collections.