Preview
Description
The Devonian Period closes with another decline and mass extinction. Again, 50 percent of species vanish world-wide, the major losses taken this time by ocean life. Basic biota body blueprints remain conservative.
Note the "bottom-heavy" trend in evolution: new lineages generate remarkable diversity when they first appear, but settle to a limited number of body plans in what paleontologist Stephen Gould calls, "early experimentation and later standardization."
It takes 30 million years for biodiversity to recover fully from this mass extinction.
Date Created
1997
Holding Institution
University of Montana--Missoula. Environmental Studies Program
Rights Statement
Rights Holder
© 1997 Stiftung Drittes Millennium
Item Type
Exhibit
Digital File Format
image/jpeg
Media Type
Text; Image
Digital Image Number
64_wtt_file04_60-79.jpg
Recommended Citation
Liebes, Sid; Mittelstadt, Laurie; Waugh, Barbara; and Brynes, Lois, "Panel 64: Rhythms Of Life And Loss" (1997). A Walk Through Time - From Stardust To Us. 64.
https://scholarworks.umt.edu/awalkthroughtime/64