General morphology of bradoriid arthropods.

<p>A, B, <i>Kunmingella douvillei</i> (Mansuy) from the early Cambrian Maotianshan Shale, Yunnan Province, China, dorsal views of two specimens showing bivalved open carapace in “butterfly” position and posterior appendages, Chen Jun-Yuan's personal collections, Chengjiang and RCCBYU 10258, respectively (B, courtesy of Derek Siveter). C, <i>Anabarochilina</i> sp., middle Cambrian from Kazakhstan, PIN N4343/55, partly exfoliated right valve. D, <i>Anabarochilina primordialis</i> (Linnarsson), middle Cambrian from Västergötland, Sweden, SGU 8662, partly exfoliated right valve. E, <i>Tsunyiella gridinae</i> Melnikova from the early Cambrian (Atdabanian) of North Central Kazakhstan, PIN N4343/12, left valve, internal mould. F, <i>Cambria melnikovi</i> Ivanova from the early Cambrian (Atdabanian) of the eastern part of Siberia, Russia, PIN N2175/1, largely exfoliated left valve. Small white arrows indicate supposed integumental hemolymph networks (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0028183#pone.0028183-Vannier5" target="_blank">[51]</a>). All scale bars: 1 mm. For repositories of figured specimens see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0028183#pone.0028183-Hou1" target="_blank">[14]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0028183#pone.0028183-Melnikova1" target="_blank">[75]</a>.