Tuzoia guntheri
| Tuzoia guntheri | ||||||||
|---|---|---|---|---|---|---|---|---|
| Temporal occurrence | ||||||||
| middle Cambrian | ||||||||
| 509 to 497 million years | ||||||||
| Locations | ||||||||
| Systematics | ||||||||
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| Scientific name | ||||||||
| Tuzoia guntheri | ||||||||
| Robison & Richards , 1981 | ||||||||
Tuzoia guntheri is an extinct species from the genus Tuzoia with an uncertain position within the arthropods (Arthropoda).
features
Tuzoia guntheri had an egg-shaped outline (length to height ratio about 1.35 in the holotype ) and a carapace length of a maximum of 80 mm. The upper edge was straight to slightly convex and had 2 spines, one long and one almost vertical smaller, which were in the front third. The anterior rostrum was pointed straight forward. The notch was overhanging. The posterior rostrum was smaller, directed upwards and backwards. A long and slender sting in the middle and a short sting on the belly side on the rear edge was present, as well as two other thorns. The net-like structure of the surface stretched over the entire tank.
Locations
The species was found in the Marjum Formation in Utah and in the Pioche Formation in Nevada .
Systematics
The species was first described in 1981 by RA Robison and BC Richards.
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
- ^ RA Robison, BC Richards: Larger bivalve arthropods from the Middle Cambrian of Utah . Paleontological Contributions of the University of Kansas 106, 1981: 1-19.