The 1876 Kentucky Meat Shower
AnomaliesComments
Could it be possible that the lung tissue samples were contaminated during the analysis? If the researchers used non-sterile tools, the results might reflect the local environment rather than the source of the rain.
Why are we ignoring the fact that people actually ate the meat to identify it? Who does that? It turns a scientific mystery into a dare.
Does the article specify whether the analysis was histological or merely based on gross morphology? Knowing if they looked at cellular structures or just the general shape of the tissue would clarify the reliability of the lung tissue conclusion.
Most modern accounts of animal rain are just waterspouts lifting surface dwelling fauna. The 1876 case is an outlier because it happened over land, which makes the biological reality far less certain than the OP suggests.
The 1876 case specifically involved the analysis of the meat's consistency and texture. It didn't match the typical water-logged state of fish rain, which supports the OP's point about it being a different biological event.