共 53 条
[32]
MORRIS WJ, 1968, NAT HIST MUS LOS ANG, V151
[33]
PATTON WW, 1973, US GEOL SURV PROF A, V774, P1
[34]
RADINSKY LB, 1969, EVOLUTION, V23, P308, DOI 10.1111/j.1558-5646.1969.tb03514.x
[35]
ROSE KD, 1981, U MICH PAP PALEONTOL, V26, P133
[37]
SCHOCH RJ, 1982, AM J SCI, V282, P920
[39]
Scott RA, 1979, US GEOL SURV CIRC, V794, P89
[40]
SLOAN RE, 1969, P N AM PALEONTOL C E, P447