Repeat: As well as finding fossilized footprints, Per Ahlberg, professor of evolutionary organismal biology at Uppsala University in Sweden, and his co-authors from the Polish Geological Institute in Warsaw also report finding several tracks of different sizes and characteristics.
As well as finding fossilized footprints, Per Ahlberg, professor of evolutionary organismal biology at Uppsala University in Sweden, and his co-authors from the Polish Geological Institute in Warsaw also report finding several tracks of different sizes and characteristics.