First description of subglacial megalineations from the late Paleozoic ice age in southern Africa Andrews, Graham D. ; McGrady, Andrew T. ; Brown, Sarah R. ; Maynard, Shannon M. Abstract Publication: PLoS ONE Pub Date: January 2019 DOI: 10.1371/journal.pone.0210673 Bibcode: 2019PLoSO..1410673A