共 19 条
[11]
JAEKEL O., 1929, PALAEONTOL ZEITSCHR, V11, P201
[12]
OPPEL A, 1862, PALAONTOL MITTL MUS, V2
[13]
PACKARD AS, 1900, AM ACAD ARTS SCI, V36, P63
[14]
RUSSELL LS, 1940, ROYAL CANADIAN I P, V23, P67
[15]
Stagner H. R., 1941, CARNEGIE I WASHINGTO, V526, P9
[16]
WALTHER J, 1904, MED NAT GES JENA
[17]
WILFARTH M, 1937, CENTRALBL MINERAL B, P329
[18]
Willard B., 1935, Journal of Paleontology Sharon, V9, P43
[19]
Williams H. S., 1885, AM J SCI, V30, P45