What archaeological discoveries has 'Dirty Water Don' made in the East River, and how significant are these findings?

'Dirty Water Don' has recovered remarkable archaeological specimens from the East River, including at least two mammoth bones, bison remains, and jawbones from ancient megafauna. These discoveries are particularly intriguing because they raise questions about historical dumping practices by major institutions like the American Museum of Natural History. The significance of these findings extends beyond mere artifact collection. They potentially offer new insights into North America's megafauna extinction events and challenge our understanding of how historical specimens were disposed of by scientific institutions. The location-specific nature of these discoveries suggests there may be more valuable archaeological material waiting to be uncovered. These underwater archaeological finds represent an intersection of paleontology, institutional history, and urban archaeology, highlighting both the scientific value of these specimens and the ethical questions surrounding their original disposal.