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New discoveries on Riversleigh 2012 expeditionBy Phil Creaser Another highly successful field trip was held from 28 June to 6 July 2012. Material was collected from a number of sites discovered in 2011 including Hey Rick, Round Table and I Don’t Know Sites with small collections made from adjacent sites discovered this year. Collecting was also undertaken at nearby sites excavated previously including Trevor’s Pit and Anton’s Pixie with further collecting done at a range of sites discovered about 10 years ago including Rick’s Sausage, Turtle Free Zone and Turtle Soup. New sites were also found when exploring from the Turtle Soup site and a previously discovered site relocated. This site, now known as Gen’s Grand Slam site, proved to be particularly rich and has great potential for more exciting finds as it is both laterally extensive and fossils can also be found at depth. The preservation of the fossils is unusual and there are interesting fossil assemblages not seen elsewhere at Riversleigh. Exploration and survey work was also carried out with a small team mapping the fossiliferous Tertiary sediments at the southern end of the Gag Plateau. This mapping is essential to understanding the geological evolution of Riversleigh and is also the closest area to the recently discovered Wholly Dooley site. Other areas explored included the area around Xstrata and Baker’s Delight sites. Other projects undertaken included a study of the water chemistry of the region and investigations of the present day fauna. |
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