Dianchicystis

Dianchicystis Temporal range: 518–513  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Early Cambrian
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Clade:	† Vetulocystida
Family:	† Vetulocystidae
Genus:	† Dianchicystis Shu et al., 2004
Type species
†Dianchicystis jianshanensis Shu et al., 2004

Dianchicystis is an extinct genus of vetulocystid deuterostome. It was found in Jianshan, China, near Haikou, in the Cambrian Qiongzhusi Formation. ^[1]

Etymology

Jianshan is to the locality from which the four initial specimens were collected, and "Dianchi" comes from nearby Dianchi lake. ^[2]

Description

It is disinguished from Vetulicocystis by an anterior cone that has ribs that are not arranged in platelets, as well as a tapering "tail" (posterior section) with oblique striations. The posterior section has weakly developed furrows, possibly indicating segmentation. ^[2]

Phylogeny

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Vetulocystidae	Dianchicystis Vetulocystis Thylacocercus

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References

1. Clausen et al. 2010 , p. 138
2. Shu et al. 2004 , p. 422

Works cited

• Clausen, Sébastien; Hou, Xian-Guang; Bergström, Jan; Franzén, Christina (2010). "The absence of echinoderms from the Lower Cambrian Chengjiang fauna of China: Palaeoecological and palaeogeographical implications". Palaeogeography, Palaeoclimatology, Palaeoecology. 294 (3): 133–141. Bibcode:2010PPP...294..133C. doi:10.1016/j.palaeo.2010.01.001.
• Shu, D.-G.; Conway Morris, S.; Han, J.; Zhang, Z.-F.; Liu, J.-N. (2004). "Ancestral echinoderms from the Chengjiang deposits of China" . Nature. 430 (6998): 422–428. Bibcode:2004Natur.430..422S. doi:10.1038/nature02648. PMID   15269760. S2CID   4421182.