共 10 条
- [1] COLLINS J S H, 1973, Bulletin of the British Museum (Natural History) Geology, V23, P351
- [2] Hattin D. E., 1982, KANSAS GEOLOGICAL SU, V225, P1
- [3] HATTIN DE, 1977, J PALEONTOL, V51, P797
- [4] Pilsbry H. A., 1933, Science New York, V77, P283, DOI 10.1126/science.77.1994.283-a
- [5] PILSBURY HENRY A., 1951, PROC ACAD NAT SCI PHILADELPHIA, V103, P197
- [6] SOHL N, 1983, US GEOLOGICAL SURVEY, V1285, P1
- [7] Withers T.H., 1928, CATALOGUE FOSSIL CIR, V1
- [8] Withers T. H., 1935, CATALOGUE FOSSIL CIR, V2
- [9] WITHERS T. H, 1953, CATALOGUE FOSSIL CIR, V3
- [10] WITHERS TH, 1947, SENCKENBURG NATURFOR, V474, P1