Tuzoia bispinosa
| Tuzoia bispinosa | ||||||||
|---|---|---|---|---|---|---|---|---|
| Temporal occurrence | ||||||||
| middle Cambrian | ||||||||
| 513 to 501 million years | ||||||||
| Locations | ||||||||
| Systematics | ||||||||
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| Scientific name | ||||||||
| Tuzoia bispinosa | ||||||||
| Yuan & Zhao , 1999 | ||||||||
Tuzoia bispinosa is an extinct species from the genus Tuzoia with an uncertain position within the arthropod (Arthropoda).
features
Tuzoia bispinosa had an egg-shaped outline (length to height ratio about 1.52 in the holotype ) and a carapace length of about 90 mm. The upper edge was straight and had two large triangular spines in the front third with additional thorns in between. The front rostrum was broad, straight, relatively short and slightly overhanging. The posterior rostrum was small and almost triangular in shape. There was a central sting and a sting towards the abdomen on the rear edge, both of which were about the same size. The side elevation between the upper and lower edge ran roughly parallel to the upper edge and possibly had 8 small, flat spines. The net-like structure of the surface stretched over the entire armor and was more closely meshed towards the center and at the lower edge.
Locations
The species was found in the Kaili Formation , Guizhou Province , in southern China.
Systematics
The species was discovered in 1999 by Yuan J.-L. and Zhao Y.-L. first described. A synonym of the species is Tuzoia magna Yuan & Zhao, 1999 .
swell
literature
- I. Chlupáč, V. Kordule: Arthropods of Burgess Shale type from the Middle Cambrian of Bohemia (Czech Republic) . Bulletin of the Czech Geological Survey, Vol. 77 (3), 2002: 167-182. PDF
- J. Vannier, J.-B. Caron, Yuan J.-L., DEG Briggs, D. Collins, Zhao Y.-L., Zhu M.-Y .: Tuzoia: Morphology and Lifestyle of a Large Bivalved Arthropod of the Cambrian Seas . Journal of Paleontology 81 (3), 2007: 445-471. HTML
Individual evidence
- ↑ Yuan J.-L., Zhao Y.-L .: Tuzoia (bivalved arthropods) from the Lower-Middle Cambrian Kaili Formation of Taijiang, Guizhou . Palaeontologica Sinica 38, Supplement, 1999: 88-93. (Chinese with English summary)