共 28 条
[21]
Meyen SV., 1971, PALAEONTOGR ABT B, V133, P1
[22]
NEIBURG MF, 1948, PALEONTOL SSSR, V12, P5
[23]
NEIBURG MF, 1965, T GEOL I AN SSSR, V116, P8
[24]
Pant D.D., 1964, PALAEONTOGR ABT B, V115, P21
[25]
Surange K.R., 1970, PALAEONTOGRAPHICA, V129, P178
[26]
Zalessky M D, 1918, MEM COM GEOL, V147, P5
[27]
ZALESSKY M.D., 1934, B ACAD SCI URSS, V5, P743
[28]
1963, OSNOVY PALEONTOLOGII, P7