The Port Kennedy Deposit

Angelo Heilprin
1895 Proceedings of the Academy of Natural Sciences of Philadelphia  
Known as the Early Journal Content, this set of works include research articles, news, letters, and other writings published in more than 200 of the oldest leading academic journals. The works date from the mid--seventeenth to the early twentieth centuries. 1895.] NATURAL SCIENCES OF PHILADELPHIA. 451 The Port Kennedy Deposit. PROF. ANGELO HEILPRIN, com- inenting upon the evidence that had been submitted regarding the age of the deposit, believed that special caution was necessary in assigning
more » ... ssary in assigning to the debris a definite geological positioni. To him the large number of extinct or Neotropical forms indicated more nearly a Pliocene rather than Post-Pliocene fauna-at all events a fauna whose culmination preceded the Glacial Epoch -and he was hardly prepared to accept them as a part of the fauna of the regioni which survived the melting of the ice. The correspondence was with the Pampean fauna of the southern continent, and this he was also inclined to believe to be (as Prof. Cope himself had years before announced) Pliocene. Prof. Heilprin said that he was not yet a convert to the Columbian gravel theory, regarding which far too much uincertainty existed to permit it to be accepted as a broad chronological element in geological history. He thought it not unlikelv that the remains in question had been subjected to redistribution by the glacial flood of the Delaware River Vallev, the hiigh backwater of which must have penetrated far into the valley of the Schuylkill, and into the very region of Port Kennedy. The Recording Secretary read the following:-