Polycylindrichnus : possible Silurian tunicate burrows from southern Ontario
Fournier, Judith A., Pemberton, S. George, Risk, Michael J.Volume:
17
Language:
english
Journal:
Canadian Journal of Earth Sciences
DOI:
10.1139/e80-070
Date:
June, 1980
File:
PDF, 790 KB
english, 1980