The Echinoid Directory
Loriolella ludovicii (Meneghini, 1867). A. marginatus Zone, Upper Pleinsbachian, Lower Jurassic, Clivio, Varese Province, Lombardy, Italy. Camera lucida drawing of ambulacral plating (peristome at base), from Smith, A. B. & Anzalone, L. 2000. Loriolella, a key taxon for understanding the early evolution of irregular echinoids. Palaeontology 43, 303-324.