Tuzoia retifera
| Tuzoia retifera | ||||||||
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| Temporal occurrence | ||||||||
| middle Cambrian | ||||||||
| 505 million years | ||||||||
| Locations | ||||||||
| Systematics | ||||||||
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| Scientific name | ||||||||
| Tuzoia retifera | ||||||||
| Walcott , 1912 | ||||||||
Tuzoia retifera is an extinct species from the genus Tuzoia with an uncertain position within the arthropods .
features
Tuzoia retifera had an egg-shaped outline (length to height ratio about 1.45) and a carapace length of 20 to 120 mm. The upper edge was straight to slightly convex and had no spines or thorns. The anterior rostrum was broad, very short, not pointed and directed slightly downwards. The eye notch was well developed. The rear rostrum was very small and blunt. There was a central sting and a sting towards the abdomen on the rear edge, but both were very small. Sometimes there was another small thorn in between. The net-like structure of the surface was even and dense and very close-meshed at the front, top and rear edges.
Locations
The species has been found several times in the Burgess slate in the Canadian Rocky Mountains .
Systematics
The species was first described by Charles Walcott in 1912 and is the type species of the genus Tuzoia . Chlupáč & Kordule 2002 consider Tuzoia burgessensis and Tuzoia canadensis to be identical to Tuzoia retifera .
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
- ↑ C. Walcott: Cambrian geology and paleontology II. 6. Middle Cambrian Branchiopoda, Malacostraca, Trilobita, and Merostomata . Smithsonian Miscellaneous Collections 57 (6), 1912: 145-228.