Snouts: A star is born in a very odd way 
The 22 rays on the
snout of the star-nosed mole develop in a manner unlike any other known
animal appendage.
References:
Catania, K.C.,
R.G. Northcutt, and J.H. Kaas. 1999. The development of a biological
novelty: A different way to make appendages as revealed in the snout
of the star-nosed mole Condylura cristata. Journal of
Experimental Biology 202(Sept. 30):2719.
Further Readings:
1996. Noses serve
as windows to the brain. Science News 150(Sept. 14):175.
Catania, K.C., and
J.H. Kaas. 1996. The unusual nose and brain of the star-nosed mole. Bioscience
46:578.
Panganiban, G., et
al. 1997. The origin and evolution of animal appendages. Proceedings
of the National Academy of Sciences 94:5162.
Sources:
Kenneth C.
Catania
Vanderbilt University
Department of Psychology
301 Wilson Hall
Nashville, TN 37240
Grace Panganiban
University of Wisconsin, Madison
Department of Anatomy
1300 University Avenue
Madison, WI 53706
From Science
News, Vol. 156, No. 17, October 23, 1999, p. 261. Copyright © 1999,
Science Service. |