THE LATE ORDOVICIAN - EARLY SILURIAN GLACIAL PERIOD

[21] ORDOVICIAN ICE AGE [J]. GEOLOGICAL MAGAZINE, 1972, 109 (05) : 451 - 456

[22] HARLAND WB, 1981, EARTHS PREPLEISTOCEN, P711

[23] KATZUNG G, 1961, GEOLOGIE, V10, P778

[24] KENNEDY MJ, 1981, EARTHS PREPLEISTOCEN, P713

[25] MAACK R., 1947, ARQUIVOS BIOLOGIA TE, V2, P63, DOI DOI 10.1590/S1516-89132001000500010

[26] MCCANN AM, 1974, GEOLOGICAL MAGAZINE, V111, P549

[27] EARLY PALEOZOIC GLACIATION IN ARABIA [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 1978, 25 (04) : 315 - 326

[28] MCKERROW WS, 1979, J GEOL SOC LONDON, V136, P137

[29] MICHOUD P, 1963, SAP4571R SOC AFR PET

[30] PICKERELL RK, 1979, GEOL SURV CAN PAP C, V791, P67

[21] ORDOVICIAN ICE AGE [J]. GEOLOGICAL MAGAZINE, 1972, 109 (05) : 451 - 456

[22] HARLAND WB, 1981, EARTHS PREPLEISTOCEN, P711

[23] KATZUNG G, 1961, GEOLOGIE, V10, P778

[24] KENNEDY MJ, 1981, EARTHS PREPLEISTOCEN, P713

[25] MAACK R., 1947, ARQUIVOS BIOLOGIA TE, V2, P63, DOI DOI 10.1590/S1516-89132001000500010

[26] MCCANN AM, 1974, GEOLOGICAL MAGAZINE, V111, P549

[27] EARLY PALEOZOIC GLACIATION IN ARABIA [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 1978, 25 (04) : 315 - 326

[28] MCKERROW WS, 1979, J GEOL SOC LONDON, V136, P137

[29] MICHOUD P, 1963, SAP4571R SOC AFR PET

[30] PICKERELL RK, 1979, GEOL SURV CAN PAP C, V791, P67