caa a22 4500 386402817 CHVBK 20180307112206.0 cr unu---uuuuu 161130e198901 xx s 000 0 eng 10.1017/S0016756800006105 doi S0016756800006105 pii (NATIONALLICENCE)cambridge-10.1017/S0016756800006105 The palaeogeographic position of the Lake District in the early Ordovician [Elektronische Daten] The early Ordovician was a time of maximum continental separation and hence a time when faunal evidence can be used to assess palaeogeography in a critical way. We summarize the known trilobite occurrences (18 genera) from the Arenig-Llanvirn of the Lake District, and record some genera for the first time. Maps of the distribution of some of these forms are given. All genera except Cyclopyge were confined to the Gondwana continent at the time, and some are known from many localities; and two species are widespread in England, Wales, France, Iberia and Bohemia. The fauna is entirely distinct from those of Scandinavia and North America. All the palaeontological evidence points to the Lake District being adjacent to Ordovician Gondwana. In the earlier Ordovician it is not reasonable to suggest that the Iapetus Ocean lay to the south of the Lake District as did Allen (1987). Copyright © Cambridge University Press 1989 Fortey R. A. British Museum (Natural History), Cromwell Road, London SW7 5BD, U.K. Owens R. M. National Museum of Wales, Cardiff CF1 3NP, U.K. Rushton A. W. A. British Geological Survey, Keyworth, Notts NG12 5GG, U.K. Geological Magazine Cambridge University Press 126/1(1989-01), 9-17 0016-7568 126:1<9 1989 126 GEO https://doi.org/10.1017/S0016756800006105 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0016756800006105 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fortey R. A. British Museum (Natural History), Cromwell Road, London SW7 5BD, U.K NATIONALLICENCE 700 1- Owens R. M. National Museum of Wales, Cardiff CF1 3NP, U.K NATIONALLICENCE 700 1- Rushton A. W. A. British Geological Survey, Keyworth, Notts NG12 5GG, U.K NATIONALLICENCE 773 0- Geological Magazine Cambridge University Press 126/1(1989-01), 9-17 0016-7568 126:1<9 1989 126 GEO CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge