With an internet search, this is what I found. The Scyphocrinites crinoids are quarried around. By digging straight down 16 feet until the layer is reached. Once the crinoid horizon is located a tunnel is dug along it by hand. The rock, dirt and crinoid slabs must then be hauled to the surface in baskets.
This has two tags on the base. SILURIAN / 420 MILLION YEARS OLD.The item "Detailed Scyphocrinites CRINOID Fossil from Morocco 420 Million Years Old" is in sale since Tuesday, October 26, 2021. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Fossils\Echinoderms\Crinoids". The seller is "tntravler" and is located in Ooltewah, Tennessee. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Mexico, New Zealand, Philippines, Singapore, Norway, Saudi arabia, United arab emirates, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, Russian federation.