PALEOBOTANICAL STUDIES IN ARCTIC CANADA .1. ARCHAEOPTERIS FROM ELLESMERE ISLAND

[1] ANDREWS HN, 1955, 1013 US GEOL SURV B

[2] ARNOLD C. A., 1939, CONTR MUS PALEONT UNIV MICHIGAN, V5, P271

[3] ARNOLD CA, 1936, CONTRIBUTIONS MUSEUM, V5, P49

[4] ARNOLD CHESTER A., 1936, CONTR MUS PALEONTOL UNIV MICHIGAN, V5, P37

[5] BANKS HP, 1964, 10 INT BOT C ED, P32

[6] A NEW ROOT SPECIES OF CALLIXYLON [J]. AMERICAN JOURNAL OF BOTANY, 1953, 40 (04) : 226 - 233

[7] CARLUCCIO LEEDS, 1963, AMER JOUR BOT, V50, P627

[8] Darrah WC, 1936, BOT MUS LEAFL HARV U, V4, P69

[9] FAIRLEY TC, 1959, SVERDRUPS ARCTIC ADV

[10] Hoeg, 1942, NORGES SVALBARD ISHA, V83, P1

[1] ANDREWS HN, 1955, 1013 US GEOL SURV B

[2] ARNOLD C. A., 1939, CONTR MUS PALEONT UNIV MICHIGAN, V5, P271

[3] ARNOLD CA, 1936, CONTRIBUTIONS MUSEUM, V5, P49

[4] ARNOLD CHESTER A., 1936, CONTR MUS PALEONTOL UNIV MICHIGAN, V5, P37

[5] BANKS HP, 1964, 10 INT BOT C ED, P32

[6] A NEW ROOT SPECIES OF CALLIXYLON [J]. AMERICAN JOURNAL OF BOTANY, 1953, 40 (04) : 226 - 233

[7] CARLUCCIO LEEDS, 1963, AMER JOUR BOT, V50, P627

[8] Darrah WC, 1936, BOT MUS LEAFL HARV U, V4, P69

[9] FAIRLEY TC, 1959, SVERDRUPS ARCTIC ADV

[10] Hoeg, 1942, NORGES SVALBARD ISHA, V83, P1