Complex sentence: A possible mounted sea mink specimen collected in 1894 in Connecticut measured from head to tail and the tail was in length, however, a 1996 study found this to be either a large American mink or possibly a hybrid.
Split into simpler sentences: A possible mounted sea mink specimen collected in 1894 in Connecticut measured from head to tail; the tail was in length. But a 1996 study found this to be a large American mink or possibly a hybrid.