This core has yielded diverse and beautifully preserved graptolites. Graptolites are incredibly abundant and in the Corral de Calatrava area they are accompanied by bivalves, brachiopods, eurypterids, trilobites and other arthropods, cornulitids and conodonts. Assemblages from many levels are different from those described from elsewhere in Europe.
Some taxa previously known primarily from North Africa are abundant.
This will be published in Earth Science Reviews. Projects on graptolites from Libya and Morocco have begun. Many faunas are of low diversity, with endemic taxa common. Collaborators include Maxine Akhurst and Mark Williams of the British Geological Survey. Graptolite biostratigraphical data is being used to constrain models of the sedimentological and structural evolution of this classic area of British geology.