ctenophores, cnidarians, gastropods, and worm trace fossils. Trilobites and echinoderms are relatively abundant in some horizons. Crinoids and starfish are the predominant representatives of the echinoderms, although holothurians (sea cucumbers) are also represented. More than 60 species of crinoids are described from the Hunsrück Slate. Many types of fishes have been described from the Hunsruck slate. Several genera of placoderm armoured fish have been recorded, including some preserved in three dimensions. Agnathan jawless fishes are the most commonly preserved vertebrates, particularly the flattened Drepanaspis, notable for its upwards-facing mouth, and the streamlined Pteraspis. Spines from acanthodii spiny sharks and a single sarcopterygian lobe-fin specimen are also known. Paleobiota Arthropods Echinoderms Annelids Molluscs Brachiopods Vertebrates Other animals Ichnotaxon Plants Fungi See also List of fossil sites (with link directory) References Geologic formations of Germany Devonian System of Europe Devonian Germany Emsian Stage Pragian Stage Slate formations Lagerstätten Paleontology in Germany de:Hunsrück#Geologie