On a Trenton Echinoderm fauna at Kirkfield, Ontario.
Springer, Frank, 1848-1927.
On a Trenton Echinoderm fauna at Kirkfield, Ontario. - Ottawa, Government Printing Bureau, 1911. - 68 p. V pl. 25 cm. - Geological Survey of Canada. Memoir 15-P . - Memoir (Geological Survey of Canada) ; 15 .
gs 11000342
Paleontology--Ontario.
Paleontology--Ordovician.
Echinodermata.
QE781
On a Trenton Echinoderm fauna at Kirkfield, Ontario. - Ottawa, Government Printing Bureau, 1911. - 68 p. V pl. 25 cm. - Geological Survey of Canada. Memoir 15-P . - Memoir (Geological Survey of Canada) ; 15 .
gs 11000342
Paleontology--Ontario.
Paleontology--Ordovician.
Echinodermata.
QE781