Subject: Re: Fossil Orca's

Peter Scheifele (
Mon, 25 Jan 1999 10:08:08 -0500

At 02:57 PM 1/24/99 -0500, you wrote:
>Dear researcher,
>on a site about Orcas by a certain Morton, a note was made
>that Orca fossils were found that were potentially 50-60
>million years old. I understood that the present idea about
>the phylogeny of cetacea is that they descended from
>mesonychids that lived around that period. I would be much
>interested to see a reference to preferably scientific
>literature or if not available popular scientific literature
>that describes these finds.
>Best wishes,
>Hans Degens
Dear Hans

        I'll try to dig up some more specific references for you but you
could begin with:

The hand book of Marine Mammals;  Vol4  by Ridgway and Leatherwood

and,  Whales of the World By Tinker

Peter M. Scheifele
Bioacoustics Research
Marine Operations Manager
Education Programs Director
National Undersea Research Center
North Atlantic and Great Lakes

Peter M. Scheifele
Senior Bioacoustician
University of Rhode Island
Department of Ocean Engineering
Bioacoustics Research

Voice:  (860) 405-9103
FAX:  (860) 445-2969