MIOCENE ECHINOIDS FROM THE VALLE CENTRAL, COSTA-RICA

[1] Arnold B.W., 1927, MEMOIRS MUSEUM COMP, V50, P1

[2] COOKE C. WYTHE, 1942, JOUR PALEONTOL, V16, P1

[3] Cooke CW, 1943, BULL GEOL SOC AM, V54, P1713

[4] COTTEAU M, 1875, KONGL SVENSKA VETENS, V13, P1

[5] Dickerson R. E., 1917, Proceedings of the California Academy of Science (4th Series), V7

[6] DURHAM J. WYATT, 1955, UNIV CALIFORNIA PUBL GEOL SCI, V31, P73

[7] Gabb W. M., 1881, J ACAD NATURAL SCI P, V2, P337

[8] Israelsky M. C., 1924, Proceedings of the California Academy of Sciences, V13, P137

[9] Jackson R. J., 1922, Carnegie Institution Publication, VNo. 306, P1

[10] JEANNET ALPH, 1928, ABHANDL SCHWEIZ PALAEONT GES [MEM SOC PALEONT SUISSE], V48, P1

[1] Arnold B.W., 1927, MEMOIRS MUSEUM COMP, V50, P1

[2] COOKE C. WYTHE, 1942, JOUR PALEONTOL, V16, P1

[3] Cooke CW, 1943, BULL GEOL SOC AM, V54, P1713

[4] COTTEAU M, 1875, KONGL SVENSKA VETENS, V13, P1

[5] Dickerson R. E., 1917, Proceedings of the California Academy of Science (4th Series), V7

[6] DURHAM J. WYATT, 1955, UNIV CALIFORNIA PUBL GEOL SCI, V31, P73

[7] Gabb W. M., 1881, J ACAD NATURAL SCI P, V2, P337

[8] Israelsky M. C., 1924, Proceedings of the California Academy of Sciences, V13, P137

[9] Jackson R. J., 1922, Carnegie Institution Publication, VNo. 306, P1

[10] JEANNET ALPH, 1928, ABHANDL SCHWEIZ PALAEONT GES [MEM SOC PALEONT SUISSE], V48, P1