A ‘Collins’ monster’-type lobopodian from the Emu Bay Shale Konservat-Lagerstätte (Cambrian), South Australia

Abstract

García-Bellido, D.C., Edgecombe, G.D., Paterson, J.R. & Ma, X. 2013. A ‘Collins’ monster’-type lobopodian from the Emu Bay Shale Konservat-Lagerstätte (Cambrian), South Australia. Alcheringa 37, 1–5. ISSN 0311-5518.A distinctive group of lobopodians known from Cambrian Stage 5 in western Laurentia includes Acinocricus Conway Morris & Robison, 1988, from the Spence Shale in Utah, and an unnamed species from the Burgess Shale, British Columbia, popularly known as ‘Collins’ monster’. The temporal gap from their closest relative, the Chengjiang lobopodian Luolishania, is bridged by a single, incomplete specimen of a Collins’ monster-type lobopodian from the Emu Bay Shale (Cambrian Series 2, Stage 4), Kangaroo Island, South Australia, the first lobopodian discovered in this Konservat-Lagerstätte. Pending formal description of the Burgess Shale species, the Australian specimen is left unassigned to a genus.Diego C. García-Bellido [diego.garcia-bellido@adelaide.edu.au], Sprigg Geobiology Centre, School of Earth and Environmental Sciences, University of Adelaide, South Australia 5005, Australia and South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia; Gregory D. Edgecombe [g.edgecombe@nhm.ac.uk], Xiaoya Ma [x.ma@nhm.ac.uk], Department of Earth Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK; John R. Paterson [jpater20@une.edu.au], Division of Earth Sciences, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia. Received 8.1.2013; revised 28.3.2013; accepted 2.4.2013.