The Cape Lookout Sperm Whale Project
  Sperm Whale (Physeter macrocephalus)  
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Bonehenge Merchandise North Carolina Whaling Group Bones Bonehenge Updates
Bonehenge Updates from Keith Rittmaster - NCMM Natural Science Curator
 
June 2010 Update
 
April 2010 Update
 
December 9th 2009 Update
 
Bonehenge goes global! 
A poster about Bonehenge was prepared for the Society for Marine Mammalogy's international Biennial Conference on the Biology of Marine Mammals in Quebec City October 12-16, 2007.  To view the poster click the Bonehenge Poster Link. To enlarge the poster - click on it.
Bonehenge Poster
 
September 9th 2009 Update
 
July 2009 Update
 
June 2009 Update
 
April 2009
Flipper Xray

Flipper X-ray - When our sperm whale was fresh dead on the beach 5 years ago, Paul Nader cut off the left flipper and froze it with the idea that x-rays would help us make a more accurate display.  Meanwhile, I asked Mark Stevens of Beach Care East to X-ray my daughter Lindsey's arm as her bones are at approximately same stage of development as those of our sperm whale.  It makes for a good comparison as both species have similar arm/flipper bones and 5 digits.  Attached is a composite of all the X-rays, as well as the bones of the flipper we buried with the rest of the whale carcass. 

March 2009
Whale Aging


Tooth preparation and age estimation:  Vicky and I spent a day behind the scenes at the Smithsonian Institution in Washington DC working with Charley Potter, Marine Mammals Collections Manager, to prepare a tooth for age estimation.  We made several tooth cuts to get a thin, longitudinal section.  We then soaked the section in formic acid for 6 hours, stained it with India ink, removed most of the stain with acetone, and photographed it on a light table through cross-polarized light.   Counting the annual growth layers gives us an age estimate of 15 years

Stomach contents:  Sperm whales mainly eat medium to large squid.  We have the stomach contents (photo at right) from “our” sperm whale which Vicky plans to analyze.  It looks like primarily squid beaks and parasitic worms.

February 2009
Bonehenge Goes to College

Bone degreasing - The1st batch of bones were processed in the vapor degreaser at the NCSU College of Veterinary Medicine.  The degreased bones are a bit lighter in color and significantly lighter in weight.  We weighed all the bones prior to degreasing and will do so again after degreasing.  The few bones we weighed so far indicate that the degreasing process decreased the weight of each bone by around 12%.  This will be helpful as we attempt to estimate the weight of the final skeletal display.  In addition to reducing the bone weight, degreasing kills bacteria, eliminates the bone odor, improves the performance of adhesives and resins used on the bones, improves the appearance of the display, and reduces the amount of dust that adheres to the bones over time.  After degreasing we'll soak the bones in a weak hydrogen peroxide solution to further kill bacteria, dissolve any remaining flesh, and make the bone color lighter and more uniform.

 

January 2009
Bonehenge Built in 7 Days!
Bonehenge Barn Raising Slideshow
 
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Contacts: Keith Rittmaster or Bones@BoneHenge.org   A Carolina Cay Sponsored Web Site