SAUROPOD POLING?

[Scott <HORTON@BCRSSU.AGR.CA>]

  I REMEMBER READING ABOUT SOME SAUROPOD FOOTPRINTS WHERE ONLY THE FRONT PRINTS
WERE VISIBLE. THIS WAS INTERPRETTED TO MEAN THAT THE ANIMAL WAS IN DEEP ENOUGH
WATER TO BUOY ITS REAR LEGS OFF OF THE LAKE BOTTOM. MY QUESTION IS: IF IT WAS
DEEP ENOUGH FOR THIS, WASN'T IT ALSO DEEP ENOUGH THAT THE WATER PRESSURE WOULD
PREVENT THE SAUROPOD LUNGS FROM OPERATING? IS THERE ANOTHER INTERPRETATION OF
THE PRINTS POSSIBLE? ARE WE SURE THAT THEY ARE _SAUROPOD_ FOOTPRINTS? WEREN'T
SOME PROSAUROPODS OCCASIONALLY BIPEDAL?

SCOTT HORTON
GEOPHYSICIST/COMPUTER PROGRAMMER