Zhenghecaris shankouensis
| Zhenghecaris shankouensis | ||||||||||||
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| Temporal occurrence | ||||||||||||
| lower Cambrian | ||||||||||||
| 521 to 509 million years | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Zhenghecaris | ||||||||||||
| Vannier , Chen , Huang , Charbonnier & Wang , 2006 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Zhenghecaris shankouensis | ||||||||||||
| Vannier , Chen , Huang , Charbonnier & Wang , 2006 | ||||||||||||
Zhenghecaris shankouensis is an extinct species from the class of the bivalve arthropod Thylacocephala .
features
The species had a long and evenly convex structure. The posterior rostrum was strong and the anterior rostrum tapered to a point. The viewing notch, a section from which the small, elliptical, stalked eyes protrude, was strongly concave. The abdominal edge was cut off in the middle and ran in a straight line. The outer surface of the carapace was provided with fine wrinkled and tubercle-like micro-ornaments.
Limbs and other soft tissues have not been preserved.
etymology
The genus name Zhenghecaris was chosen in honor of the Chinese admiral Zheng He ( Chinese 鄭 和 / 郑 和 , W.-G. Cheng Ho ) (1371-1435). The addition caris is the Latin word for shrimp. The specific epithet comes from the type locality Shankou.
Location
Zhenghecaris shankouensis is the largest ( holotype 125 mm long) bivalve arthropod to date from the Maotianshan schist in the Yunnan Province in southern China. A total of 5 specimens of this species were found there in the Eoredlichia - Wutingaspis trilobite zone.
Systematics
The species Zhenghecaris shankouensis belongs to the Thylacocephala because of the dorsally fused and laterally compressed shell with anterior and posterior rostrum, as well as because of the well-developed stalked eyes that protrude over the anterior visual notch .
swell
literature
- J. Vannier, Chen J.-Y., Huang D.-Y., S. Charbonnier, Wang X.-Q: The Early Cambrian origin of thylacocephalan arthropods . Acta Palaeontologica Polonica 51 (2), 2006: 201-214. PDF