A study of the evolution of longirostrine gomphotheres, an ancestor of the modern day elephant, suggests moving into open-land grazing helped develop their coiling and grasping trunks.
Demystifying the Mysteries of Elephant Trunk Biomechanics
Five elephants die of dehydration in Zimbabwe as El Nino sweeps across Africa
Climate Change Threatens Older Elephants Most, Jeopardizing Their
Events--Institute of Vertebrate Paleontology and Paleoanthropology
Understanding elephant trunks could be a breakthrough for robotics
Former circus elephants are swimming and grazing on fruit buffets
Climate change threatens older elephants most, jeopardizing their future
Happy Is an Elephant. Is She Also a Person? - The Atlantic
Elephant trunks are very dexterous because they are so wrinkly
Investigate It! Tremendous Trunks Investigate It! Article for
What Has Four Legs, a Trunk and a Behavioral Database? - The New York Times