The early evolution and relationships of the elasmobranchs

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[52] JAEKEL O, 1906, SITZUNGSBERICHTE GES, P155

[53] JAEKEL O, 1921, PALAEONTOL Z, V3, P217

[54] JAEKEL O, 1891, SBER GES NATURF FR, P115

[55] KARPINSKY A, 1918, VERH KAIS MIN GES ST, V49, P69

[56] KOKEN E, 1889, SITZUNGSBERICHTE GES, P77

[57] Moy-Thomas J. A., 1936, School Science Review, V68, P592

[58] Moy-Thomas J. A., 1937, Geological Magazine London, V74, P183

[59] MOY-THOMAS J. A., 1935, PROC LEEDS PHIL AND LIT SOC SCI SECT, V3, P68

[60] Moy-Thomas J.A., 1936, P ZOOL SOC LOND, P761

[51] JAEKEL O, 1925, JBER MEDERSACHS GEOL, P182

[52] JAEKEL O, 1906, SITZUNGSBERICHTE GES, P155

[53] JAEKEL O, 1921, PALAEONTOL Z, V3, P217

[54] JAEKEL O, 1891, SBER GES NATURF FR, P115

[55] KARPINSKY A, 1918, VERH KAIS MIN GES ST, V49, P69

[56] KOKEN E, 1889, SITZUNGSBERICHTE GES, P77

[57] Moy-Thomas J. A., 1936, School Science Review, V68, P592

[58] Moy-Thomas J. A., 1937, Geological Magazine London, V74, P183

[59] MOY-THOMAS J. A., 1935, PROC LEEDS PHIL AND LIT SOC SCI SECT, V3, P68

[60] Moy-Thomas J.A., 1936, P ZOOL SOC LOND, P761