evidence: A 1979 study from the University of Waikato found, "Temperatures derived from an 18O/16O profile through a stalagmite found in a New Zealand cave (40.67°S, 172.43°E) suggested the Medieval Warm Period to have occurred between AD c. 1050 and c. 1400 and to have been 0.75 °C warmer than the Current Warm Period."[75] More evidence in New Zealand is from an 1100-year tree-ring record.[76] [...] - ^ Cobb, Kim M.; Chris Charles; Hai Cheng; R. Lawrence Edwards (July 8, 2003). "The Medieval Cool Period And The Little Warm Age In The Central Tropical Pacific? Fossil Coral Climate Records Of The Last Millennium". The Climate of the Holocene (ICCI) 2003. Archived from the original on August 25, 2004. Retrieved 4 May 2006.