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SEILACHER, A. 1998. Mosasaurs, limpets, or diagenesis.
In the German journal Geowissenschaftliche Reihe, Adolf Seilacher
(1999) wrote, ?The claimed ?mosasaur bites? are probably all caused by
limpets rasping on necroplanktonic Placenticeras shells, compactual
puncturing of the pits and diagnostic beveling of the rims.? In other
words, the ammonites were already dead and lying on the bottom when they
were colonized by the limpets. Furthermore, the experimenters built a
machine fitted with artifical mosasaur teeth, and when they applied it to
freshly-caught nautilus shells with the equivalent pressure of mosasaur
bites, it shattered the shells instead of puncturing them.