The morphological status of the modern Amphibia among the tetrapoda

[1] BOAS JEV, 1915, MORPH JB, V49, P229

[2] BRONN HG, 1873, KLASSEN ORDUNGEN THI, P1

[3] BYSTROW A. P., 1938, ACTA ZOOLOGICA, V19, P209

[4] Camp CL, 1923, B AM MUS NAT HIST, V48, P289

[5] Case E.C., 1911, CARNEGIE I WASHINGTO, V146, P1

[6] Cope E.D., 1900, ANN REP US NATL MUS, V1898, P153

[7] Cope E.D., 1889, B US NATL MUSEUM, V34, P1, DOI DOI 10.5962/BHL.TITLE

[8] COPE ED, 1892, P AM PHILOS SOC, V30, P185

[9] De Beer GR, 1953, ANN SCI, V9, P1, DOI [10.1002/ar.1090700511, DOI 10.1002/AR.1090700511]

[10] EATON THEODORE H., 1939, JOUR WASHINGTON ACAD SCI, V29, P109

[1] BOAS JEV, 1915, MORPH JB, V49, P229

[2] BRONN HG, 1873, KLASSEN ORDUNGEN THI, P1

[3] BYSTROW A. P., 1938, ACTA ZOOLOGICA, V19, P209

[4] Camp CL, 1923, B AM MUS NAT HIST, V48, P289

[5] Case E.C., 1911, CARNEGIE I WASHINGTO, V146, P1

[6] Cope E.D., 1900, ANN REP US NATL MUS, V1898, P153

[7] Cope E.D., 1889, B US NATL MUSEUM, V34, P1, DOI DOI 10.5962/BHL.TITLE

[8] COPE ED, 1892, P AM PHILOS SOC, V30, P185

[9] De Beer GR, 1953, ANN SCI, V9, P1, DOI [10.1002/ar.1090700511, DOI 10.1002/AR.1090700511]

[10] EATON THEODORE H., 1939, JOUR WASHINGTON ACAD SCI, V29, P109