Here is a rare trilobite association. This is a Dorypyge swasii and Asaphiscus wheeleri from the Wheeler Shale in Utah. This specimen was found in 1996 and just now microscopically prepared in the EXTINCTIONS Prep Lab here in Colorado. Both trilobites are complete with both free cheeks present. The Dorypyge exhibits very fine detail, with the genal spines, thoracic spines, and tail spines all nicely showcased. The trilobite also has a row of short spines emanating from axial lobe of the thorax, and these spines have even been prepared in a free-standing manner. The Asaphiscus is extremely large and very well preserved. Both trilobites have nice dark color, with the Dorypyge having yellow spines. The fossils are nicely showcased on the rectangular matrix block. This is an extremely rare double specimen of Dorypyge and Asaphiscus from Utah.
This fossil was collected and obtained legally, and is also being sold legally.