It may be like Pompeii, the super heated poisonous gases hit them all at once and most died where they stood.................or in this case, sat...........
I think it was the opposite. More along the lines of a biblical flood followed by a deep freeze.
We could be more certain about the cause of the encasement if the article had stated the type of material in which the fossils were found. Was it mud or was it volcanic ash? That would tell the tale.
Good call, killed by the gas, stayed for the ash burial and fossilization.
Early volcano victims discovered
BBC | Monday, May 3, 1999 | editors
Posted on 9/4/2004, 1:59:51 AM by SunkenCiv
https://www.freerepublic.com/focus/chat/1207091/posts