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Re: Solnhofen Taphonomy



Jerry Harris wrote:

>>A fluctuating hypocline, plus attendant anoxia, has been invoked to explain
>>the mass death and excellent preservation of fish from the Cretaceous
>>Santanna Formation in Brazil. The fish from this deposit have muscle tissue
>>preserved down to the cellular level (Martill 1988). Also pterosaur wing
>>membranes have been preserved (Martill & Unwin 1989).
>
>        OK -- but, as far as I know, no one's proposed such mass death
>scenarios for the Solnhofen.

No. I included this to show that where similar conditions to that of the
Solnhofen lagoon occurred elsewhere, similar preservation is found. The
bottom of the Solnhofen lagoon was, in all probability, constantly
hypersaline/anoxic.

Chris

cnedin@geology.adelaide.edu.au                  nedin@ediacara.org
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Many say it was a mistake to come down from the trees, some say
the move out of the oceans was a bad idea. Me, I say the stiffening
of the notochord in the Cambrian was where it all went wrong,
it was all downhill from there.