''Sinoburius'' is an extinct genus of xandarellid

artiopoda The Artiopoda is a grouping of extinct arthropods that includes trilobites and their close relatives. It was erected by Hou and Bergström in 1997 to encompass a wide diversity of arthropods that would traditionally have been assigned to the Trilo ...

n known from the

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

aged

Chengjiang Biota The Maotianshan Shales are a series of Early Cambrian deposits in the Chiungchussu Formation, famous for their '' Konservat Lagerstätten'', deposits known for the exceptional preservation of fossilized organisms or traces. The Maotianshan Shales ...

of China. It is only known from the type species ''S. lunaris'', which was described in 1991. It is a rare fossil within the Chengjiang assemblage. Like other Xandarellids, ''Sinoburius'' has an unmineralised exoskeleton. Adult individuals are around 7-8 millimetres in length, with stalked eyes present on the ventral side. Unusually among artiopods, the antennae are strongly reduced in size. Sinoburius 7

References

Artiopoda Fossil taxa described in 1991 {{paleo-arthropod-stub