Changes in theoretical ecospace utilization in marine fossil assemblages between the mid-Paleozoic and late Cenozoic

From: Paleobiology | Date: January 1, 2007| Author: Bambach, Richard K; Daley, Gwen M; Bush, Andrew M | Copyright information

Abstract.-

We present a new three-dimensional theoretical ecospace for the ecological classification of marine animals based on vertical tiering, motility level, and feeding mechanism. In this context, analyses of a database of level-bottom fossil assemblages with abundance counts demonstrate fundamental changes in marine animal ecosystems between the mid-Paleozoic (461-359 Ma) and late Cenozoic (23-0.01 Ma). The average local relative abundance of infaunal burrowers, facultatively mot...

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