Human Evolution conference London 8–10 May 2013
http://www.royalmarsden.nhs.uk/education/education-conference-centre/study-days-conferences/pages/2013-evolution.aspx

Was Man more aquatic in the past? eBook
http://www.benthamscience.com/ebooks/9781608052448/index.htm

M.Verhaegen, S. Munro, P-F.Puech & M.Vaneechoutte 2011 in M.Vaneechoutte cs.eds “Was Man more aquatic in the past?” ebook Bentham scient.publ. pp.67-81:
… most australopiths were aquarboreals in inland wetlands:
- Their fossils have been found in Pliocene wet forests and in Pleistocene more open wetlands: gallery forests, lakeside grasslands, riverside reedbeds, papyrus swamps, montane lakeside forests, shallow lagoons etc. [1,3].
- Their postcrania suggest they might have waded and walked regularly on two legs and later also on their knuckles, and climbed arms overhead in the trees, eg, for sleeping, refuge, or fruit gathering. This fits their bipedal footprints (Laetoli), skull pneumatization and large laryngeal airsacs (Dikika), curved phalanges, upward oriented shoulder joints, toeing-in of feet and knuckle-walking features of wrists (Lucy), and very long arms in later australopiths (Omo L.40-19).
- Their broad and heavy jaws with molarized premolars and broad blunt cheek teeth (bunodonty), very thick enamel, and polished micro-wear [33,49] suggest wetland diets of hard-shelled invertebrates, eggs, fruits, nuts, floating plants, sedges, papyrus parts etc. Very thick tooth enamel combined with stone tool use are typically seen in hominids-pongids, capuchin monkeys and sea otters, and suggest a diet including hard foods like nuts or shelled molluscs (durophagy): capuchins crack nuts with stones, and use shells to remove oysters from mangrove trunks [54], and sea otters open seafoods with stones and have flat australopith-like cheek teeth [55].
Our view of australopiths as wetland dwellers [33,49,51] has recently been supported: Alan Shabel [44,56] compares australopiths with durophagous Carnivora in wetlands, Nikolaas van der Merwe [57] argues A.boisei may have fed on papyrus, and Richard Wrangham [42] thinks aquatic plants were possible fallback foods for early hominids …