The anomalous bathyurid trilobite Ceratopeltis, and its homeomorphs = Ceratopeltis, un trilobite bathyuridé anormal et ses homéomorphesFORTEY, R. A; PEEL, J. S.1983, Num 30, pp 51-57, issn 0038-6804Article

EARLY ORDOVICIAN BATHYURID PROVINCE LITHOFACIES, BIOFACIES AND CORRELATIONS, THEIR RELATIONSHIP TO A PROTO-ATLANTIC OCEAN.1972; LETHAIA; NOR; 1972, VOL. 5, NUM. 0001, P. 69 A 83Miscellaneous

IOWER ORDOVICIAN TRILOBITES OF THE OXFORD FORMATION, EASTERN ONTARIOLUDVIGSEN R.1979; CANAD. J. EARTH SCI.; CAN; DA. 1979; VOL. 16; NO 4; PP. 859-865; ABS. FRE; BIBL. 29 REF.; 10 ILL.Article

Early Ordovician trilobites from the Wandel Valley Formation, eastern North Greenland = Trilobites de l'Ordovicien inférieur de la Formation Wandel Valley, Groenland Nord orientalFORTEY, R. A.1986, Num 12, pp 15-25, issn 0418-6559Article

Early Ordovician trilobites and molluscs from the Poulsen Cliff Formation, Washington Land, western North Greenland = Trilobites et mollusques de l'Ordovicien inférieur de la Formation Poulsen Cliff, Terre Washington, partie occidentale du Groenland septentrionalFORTEY, R.A; PEEL, J.S.Bulletin of the Geological Society of Denmark. 1990, Vol 38, Num 1-2, pp 11-32, issn 0011-6297, 22 p.Article