A new Ordovician (Katian) calymenid, Gravicalymene bakeri sp. nov., from the Gordon Group, Tasmania, Australia. Issue 4 (1st October 2020)

• Record Type: Journal Article
• Authors: Smith, Patrick M.; Ebach, Malte C.
• Is Part Of: Alcheringa. Volume 44:Issue 4(2020)
• Page Start: 496
• Page End: 504
• Publication Date: 2020-10-01
• Subjects: East Gondwana -- Late Ordovician -- Eastonian -- trilobite -- Calymeninae -- Sthenarocalymene; Paleontology -- Australasia -- Periodicals; 560.99405
• DOI: 10.1080/03115518.2020.1797874
• Languages: English
• ISSNs: 0311-5518

Abstract

Abstract: A previously unreported calymenid trilobite, Gravicalymene bakeri sp. nov., is described herein from Late Ordovician (latest Eastonian, Katian) shales of the Gordon Group, Tasmania. This is the first record of Gravicalymene from the Ordovician of East Gondwana (Australasia), a genus which is otherwise relatively well-known from Avalonia, Baltica and Laurentia (i.e., Europe and North America). The current taxonomic status of the genus Gravicalymene and other morphologically similar genera (e.g., Apocalymene, Calymene, Flexicalymene, and Sthenarocalymene ) is also discussed. P.M. Smith [[e-mail] ] Palaeontology Department, Australian Museum Research Institute, Sydney, New South Wales, 2010, Australia and, Department of Biological Sciences, Macquarie University, Sydney, New South Wales, 2109, Australia; M.C. Ebach [[e-mail] ] Palaeontology, Geobiology and Earth Archives Research Centre, School of Biological, Earth and Environmental Sciences, UNSW, Sydney, Australia.