Preservational folds simulating tergite junctions in tegopeltid and naraoiid arthropods

The exoskeleton in the Middle Cambrian Burgess Shale arthropod Tegopelte has previously been described as divided into tergites. Evidence from its sister taxon Saperion and from a Naraoia specimen from the Lower Cambrian Chengjiang fauna enables a reinter
Addresses: Ramskold L, UPPSALA UNIV, MUSEUM PALEONTOL, NORBYVAGEN 22, S-75236 UPPSALA, SWEDEN. ACAD SINICA, NANJING INST GEOL & PALAEONTOL, NANJING 210008, PEOPLES R CHINA. AUSTRALIAN MUSEUM, SYDNEY, NSW 2000, AUSTRALIA.