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Mike, These are vaguely like the paired clasper spines of dogfish, just a larger scale - I don't know if sleeper sharks have clasper spines and hooks like dogfish do but sleepers are in the same family, so they might. Don't know who would have a specimen to confirm however. my two cents. Susan ----- Original Message ----- From: "Michael A. Etnier" <[log in to unmask]> Date: Monday, November 14, 2011 11:32 am Subject: Re: [ZOOARCH] ID help---poss. cartilaginous fish To: [log in to unmask] > my first thought was actually cetacean pelvic bones. but > they are definitely not bone, nor antler (sorry Greg). > > and not to throw people off the track too much by the context > (fish next in 12 m of water): most anything could show up, > including deer---we've recovered a swan humerus as well as some > chicken bones from nets 25 m deep (though I later found out the > KFC bones were planted). > > thanks for the opinions..... > > ---mike > > > > Michael A. Etnier, PhD > Applied Osteology > Bellingham, WA > www.appliedosteology.com > > and > > Department of Anthropology > University of Washington > Seattle, WA > http://faculty.washington.edu/metnier/ > > -------- Original Message -------- > > From: "P Lange" <[log in to unmask]> > > Sent: Monday, November 14, 2011 9:45 AM > > To: [log in to unmask] > > Subject: Re: [ZOOARCH] ID help---poss. cartilaginous fish > > > > Well, I thought they looked like mammal ribs. Anyone else > wants to give a wild guess?! Over to you... > > Priscilla > > Sent using BlackBerry® from Orange > > > > -----Original Message----- > > From: GREGORY > CAMPBELL <[log in to unmask]> > > Sender: Analysis of animal > remains from archaeological sites <[log in to unmask]> > > Date: Mon, 14 > Nov 2011 17:36:26 > > To: <[log in to unmask]> > > Reply-To: GREGORY CAMPBELL > <[log in to unmask]>> Subject: Re: [ZOOARCH] ID > help---poss. cartilaginous fish > > > > Dear Zooarchers: I'm willing to look stupid in public. > These look like cervid antlers with the tines removed/busted off > (attachment points at top ends in the picture), with most of the > structure consumed by marine bacteria. I would guess small > whitetail deer (a bit small for full adult), perhaps pronghorn > (not so likely); not enough basal tines for elk. > > Greg Campbell > The Naive Chemist > > > ________________________________ > From: Michael A. Etnier <[log in to unmask]> > To: [log in to unmask] > Sent: Monday, 14 November 2011, 16:08 > Subject: [ZOOARCH] ID help---poss. cartilaginous fish > > I need some ID help with this matched pair of elements. > They were > recovered from a fishing net in about 12 m of water, in Puget > Sound. I > think they are from a large cartilaginous fish, but I don't have > a clue as > to what element they might be, or what species. > > They are completely hollow, with a wall thickness of about 3 mm, > ossified > cartilage. > > Photos posted at: > > http://alexandriaarchive.org/bonecommons/items/show/1814 > > Thanks, > > Mike > > Michael A. Etnier, PhD > Applied Osteology > Bellingham, WA > www.appliedosteology.com > > and > > Department of Anthropology > University of Washington > Seattle, WA > http://faculty.washington.edu/metnier/ > Susan J. Crockford, Ph.D. (Zoology/Evolutionary Biology/Archaeozoology) Adjunct Professor (Anthropology/Graduate Studies) email: [log in to unmask] University of Victoria, British Columbia, Canada AND Pacific Identifications Inc. (www.pacificid.com) 6011 Oldfield Rd., RR 3 Victoria BC V9E 2J4 phone (250) 721-7296 fax (250) 721-6215 email: [log in to unmask] **see my book website www.rhythmsoflife.ca **