The 6th ExtinctionAudiobook CD - 2014
Commander Gray Pierce and Sigma must unravel a threat that rises out of the distant past, to a time when Antarctica was green and all life on Earth balanced upon the blade of a knife. Following clues from an ancient map rescued from the lost Library of Alexandria, Sigma will discover the truth about an ancient continent, about a new form of death buried under miles of ice. From millennia-old secrets out of the frozen past to mysteries buried deep in the darkest jungles of today.
Publisher: [New York] : HarperAudio, 
Branch Call Number: CD FIC ROLLINS
Characteristics: audio file,CD audio digital 12 audio discs (15 hr.) : CD audio, digital ; 4 3/4 in.
Alternative Title: Sixth extinction