Ancient Marine Invertebrate Diversity Less Explosive Than Thought
Thursday, July 3, 2008 - 14:21
in Paleontology & Archaeology
Diversity among the ancestors of such marine creatures as clams, sand dollars and lobsters showed only a modest rise beginning 144 million years ago with no clear trend afterwards, according to researchers. This contradicts previous work showing dramatic increases beginning 248 million years ago and may shed light on future diversity.