Excerpt from The Devonian Crinoids of the State of New York York and sent him out among the Devonian rocks of the State specially to collect these crinoids with
The rapid evolution of terrestrial ecosystems in the Devonian Period combined with climate change and many global events had a pronounced influence on sedimenta
Crinoids have graced the oceans for more than 500 million years. Among the most attractive fossils, crinoids had a key role in the ecology of marine communities