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Orthrozanclus : ウィキペディア英語版
Orthrozanclus

''Orthrozanclus reburrus'' ("Dawn scythe with bristling hair") is a sea creature known from the Middle Cambrian (~) Burgess shale, about one centimeter long, with long spikes protruding from its armored body
The describers of this fossil animal, Simon Conway Morris and Jean-Bernard Caron, say ''Orthrozanclus'' may have formed a link between the halkieriid and the wiwaxiid families,〔 uniting them tentatively in a group called "Halwaxiida", characterized by a similar type of body armor; these organisms might have been stem group molluscs, or fall as a stem group to the larger lophotrochozoan clade (containing molluscs, annelids and brachiopods). However, the status of the Halwaxiid grouping is not universally accepted.
==History of discovery==
J.B. Caron and D.A. Jackson found a specimen in the Burgess Shale and in 2006 referred to it as "scleritomorph C" without a detailed description. In 2007 Caron and Simon Conway Morris published a description and named the fossil ''Orthrozanclus reburrus'', which means "Dawn scythe with bristling hair".

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