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Re: ammonites vs. fish at K-T



In a message dated 5/21/2001 11:43:12 AM Central Daylight Time,
t_gmhuman@agency.com writes:

>>Have we seen any hints of *fossil* evidence of massive die-offs (eg, a thick
carpet of fish packed like sardines)?<<

In Walter Alvarez' book, T. REX AND THE CRATER OF DOOM (Princeton, 1997), he
writes of a "fish clay" at the Danish K/T boundary at Stevns Klint. Alvarez
writes:

"But the [iridium-bearing K/T boundary] clay bed was black, smelled
sulfurous, and had no fossils except for fish bones. During the time interval
represented by this 'fish clay,' the healthy sea bottom had turned into a
lifeless, stagnant, oxygen-starved graveyard, where dead fish slowly rotted."

Caitlin R. Kiernan