Is This a Half Rotted River Dolphin?

It's possible that the account we're getting third hand at this point, through marco polo'sa biographer here, is some sort of half remembered synthesis or reassemblage of these other pieces. The sing tang river was known to at least sometimes have yange river dolphins in it. So i can't help but wonder if this might have been a case of a half rotted river dolphin washing up not because tissue and fibres on rotting fish dolphins and whales can sometimes take on shocking forms. This may be ttat then can be connected to various myths and legends or theories about cryptits.