caa a22 4500 388016957 CHVBK 20180307124913.0 cr unu---uuuuu 161130e199807 xx s 000 0 eng 10.1017/S0022336000040385 doi S0022336000040385 pii (NATIONALLICENCE)cambridge-10.1017/S0022336000040385 Whittington Harry B. Sedgwick Museum, Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, U.K. Hanburia gloriosa: Rare trilobite from the Middle Cambrian, Stephen Formation, British Columbia, Canada [Elektronische Daten] [Harry B. Whittington] Hanburia gloriosa is probably blind, the smaller specimens having a forwardly expanding glabella with lateral lobes, and six (rarely five) thoracic segments; larger specimens have a parallel-sided glabella with faint traces of lateral lobes, and six, in one case seven, thoracic segments; pygidium equal in size to the cephalon. All specimens may be holaspid, the larger corynexochoid-like; however, the smaller ones are not like any known corynexochoid. Hanburia gloriosa is the rarest trilobite from the Stephen Formation. This species, and other rare but widely distributed Lower and Middle Cambrian species from deeper water faunas are all of uncertain affinities. They do not fit into the general picture of trilobite evolution, nor appear likely ancestors of shallow water species. Copyright © The Paleontological Society Journal of Paleontology Cambridge University Press 72/4(1998-07), 673-677 0022-3360 72:4<673 1998 72 JPA https://doi.org/10.1017/S0022336000040385 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022336000040385 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Whittington Harry B. Sedgwick Museum, Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, U.K NATIONALLICENCE 773 0- Journal of Paleontology Cambridge University Press 72/4(1998-07), 673-677 0022-3360 72:4<673 1998 72 JPA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge