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   Are these definitions correct?

   lacustrine, adjective, describes a sedimintary deposit laid down by a
lake.  Lacustrine deposits are often comprised of limestone, such as the
Solnhofen and Liaoning lacustrine deposits

   lagerstatten, adjective, describes a sedimentary deposit comprised of
sediment of exceptionally fine grains.  Lagerstatten deposits often preserve
the fine detail of fossils found within, such as the feathers of
<I>Archaeopteryx</I> fossils from Solnhofen

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