The early evolution and relationships of the elasmobranchs

[61] Moy-Thomas JA., 1935, P ZOOL SOC LOND, P391

[62] MOYTHOMAS JA, 1936, GEOL MAG LOND, V73, P489

[63] MOYTHOMAS JA, 1936, REP BRIT ASS, P367

[64] NEILSEN E, 1932, MEDD GRONLAND, V86

[65] NEILSEN E, 1935, MEDD GRONLAND, V98

[66] NEWBERRY JS, 1875, REP GEOL SURV OHIO, V2

[67] NORMAN JR, 1931, HIS FISHES LONDON

[68] Owen R., 1840, ODONTOGRAPHY

[69] PRUVOST P, 1922, B ACAD BELG CL SCI, P213

[70] Regan CT, 1906, P ZOOL SOC LOND, V1906, P722

[61] Moy-Thomas JA., 1935, P ZOOL SOC LOND, P391

[62] MOYTHOMAS JA, 1936, GEOL MAG LOND, V73, P489

[63] MOYTHOMAS JA, 1936, REP BRIT ASS, P367

[64] NEILSEN E, 1932, MEDD GRONLAND, V86

[65] NEILSEN E, 1935, MEDD GRONLAND, V98

[66] NEWBERRY JS, 1875, REP GEOL SURV OHIO, V2

[67] NORMAN JR, 1931, HIS FISHES LONDON

[68] Owen R., 1840, ODONTOGRAPHY

[69] PRUVOST P, 1922, B ACAD BELG CL SCI, P213

[70] Regan CT, 1906, P ZOOL SOC LOND, V1906, P722