Sinoburius lunaris

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Sinoburius lunaris
Temporal occurrence
Lower Cambrian
525 to 520 million years
Locations
Systematics
Class : Artiopoda
Subclass : Petalopleura
Order : Sinoburiida
Family : Sinoburiidae
Genre : Sinoburius
Type : Sinoburius lunaris
Scientific name of the  order
Sinoburiida
Hou & Bergström , 1997
Scientific name of the  family
Sinoburiidae
Hou & Bergström , 1997
Scientific name of the  genus
Sinoburius
Hou , Ramsköld & Bergström , 1991
Scientific name of the  species
Sinoburius lunaris
Hou , Ramsköld & Bergström , 1991

Sinoburius lunaris is an extinct species from the tribe of the arthropods (Arthropoda).

features

Sinoburius lunaris was no more than 12 mm long even fully grown. The species had a large head-shield, with large, possibly stalked, oval eyes. In addition to the simple antennae, there were at least 4 pairs of long, sideways, two-branched extremities on the head shield. The trunk consisted of a smaller tergite at the end of the head shield, as well as 6 larger tergites that ended laterally in backward spines and a pygidium-like tergite with a large, centrally located spike and 2 further thorns on each side. A kind of spindle globe, like the trilobites , extended from the head shield to the telson.

Location

Only 5 specimens of this species have been found in the Chengjiang Fauna Community in China . This species is not known in other Cambrian fossil sites .

Systematics

The species was described in 1991 by Hou Xian-Guang , Lars Ramsköld and Jan Bergström . The genus Sinoburius was only identified because of its close relationship with Cindarella Chen et al. , 1996 and Xandarella Hou et al., 1991 in the family Xandarellidae Chen et al., 1996 . In 1997, Hou and Bergström recognized a monotypically higher taxon: they placed it in the order Sinoburiida (with the family Sinoburidae), which they placed together with Xandarellida Chen et al., 1996 in the new subclass Petalopleura Hou & Bergström, 1997 .

swell

literature

Individual evidence

  1. ↑ Hou X.-G., L. Ramsköld & J. Bergström: Composition and preservation of the Chengjiang fauna - a Lower Cambrian soft-bodied biota . Zoologica Scripta 20, 1991: 395-411.
  2. ↑ Chen J.-Y., Zhou G.-Q., Zhu M.-Y., Yeh K.-K .: The Chengjiang Biota. A Unique Window of the Cambrian Explosion . National Museum of Natural Science, Taichung, 1996, 222. pp.
  3. ↑ Hou X.-G., J. Bergström: Arthropods of the Lower Cambrian Chengjiang fauna, southwest China . Fossils and Strata 45, 1997: 1-116.
  4. ^ Gregory D. Edgecombe, Lars Ramsköld: Relationships of cambrian arachnata and the systematic position of trilobita . Journal of Paleontology 73 (2), 1999: 263-287. PDF

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