The Barrandium (the western part of Bohemian Massif, Czech republic) is named after the French engineer and fossil collector Joachim Barrande (1799-1883). The “System Silurien du Centre de la Boheme” comprises 21 volumes with 6.950 pages and 1.148 tables, describing and depicting fossils attributed by Barrande to the “Primordial Fauna”.
Metacanthina issoumourensis Trilobites Order Phacopida, Superfamily Acastoidea, Family Acastidae, Subfamily Asteropyginae Geological Time: Middle Devonian Size (25.4 mm = 1 inch): Trilobite is 55 mm long (curve measure) by 30 mm wide on a 90 by 80 mm matrix Fossil Site: Jebel Issoumour, Alnif, Morocco
"Welcome home to one of the rarest trilobites in the world. Thanks to a gift by Robert Hazen, this fossil of a new Apianurus species is now a part of the Museum's collection. This beautiful fossil was discovered by paleontologist Jake Skabelund in 2011 at the Walcott-Rust Quarry in New York." --Deep Time at the Smithsonian Facebook Page