ENIGMATIC ANIMAL OPABINIA-REGALIS, MIDDLE CAMBRIAN, BURGESS SHALE, BRITISH-COLUMBIA

[1] FEDOTOV D, 1925, IZV ROSS AKAD NAUK, P383

[2] FLORKIN M, 1970, CHEMICAL ZOOLOGY A, V5

[3] FRITZ WH, 1971, 1969 P N AM PAL CONV, P1155

[4] GRASSE PP, 1949, TRAITE ZOOLOGIE, V6

[5] HUGHES CP, IN PRESS

[6] HUTCHINSON GEORGE EVELYN, 1930, PROC U S NATIONAL MUS, V78, P1

[7] JOHNSON R G, 1969, Fieldiana Geology, V12, P119

[8] Linder F, 1946, ARK ZOOL, V37, P1

[9] MANTON SM, 1973, J ZOOL, V171, P111

[10] POLYCHAETE SPINTHER AND ORIGIN OF ARTHROPODA [J]. JOURNAL OF NATURAL HISTORY, 1967, 1 (01) : 1 - &

[1] FEDOTOV D, 1925, IZV ROSS AKAD NAUK, P383

[2] FLORKIN M, 1970, CHEMICAL ZOOLOGY A, V5

[3] FRITZ WH, 1971, 1969 P N AM PAL CONV, P1155

[4] GRASSE PP, 1949, TRAITE ZOOLOGIE, V6

[5] HUGHES CP, IN PRESS

[6] HUTCHINSON GEORGE EVELYN, 1930, PROC U S NATIONAL MUS, V78, P1

[7] JOHNSON R G, 1969, Fieldiana Geology, V12, P119

[8] Linder F, 1946, ARK ZOOL, V37, P1

[9] MANTON SM, 1973, J ZOOL, V171, P111

[10] POLYCHAETE SPINTHER AND ORIGIN OF ARTHROPODA [J]. JOURNAL OF NATURAL HISTORY, 1967, 1 (01) : 1 - &