| Vetulocystis Temporal range: 518–513 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Early Cambrian | |
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| Vetulocystis catenata (bottom) and Cathaymyrus diadexus (top). | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Clade: | Ambulacraria (?) |
| Clade: | †Vetulocystida |
| Family: | †Vetulocystidae |
| Genus: | †Vetulocystis Shu et al., 2004 |
| Type species | |
| †Vetulocystis catenata Shu et al., 2004 | |
Vetulocystis is an extinct genus type genus of the family Vetulocystidae. It was found in the Maotianshan Shales, which date to roughly 518 mya.
Etymology
From the latin vetus (old), plus "cystidae" referencing the bag-like shape. The specific name is from the latin catena, meaning chain, as a pun on the fossil as a missing link.
Description
Vetulocystis is distinguished from Dianchicystis by a widening, rather than tapering, "tail" (posterior section). The posterior section appears to be divided into two. The anterior cone is pyramidal with over 50 articulated platelets. The posterior cone is pyramidal with many ribs.
Phylogeny
| Vetulocystidae |
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References
- Hou et al. 2017, p. 268
- Clausen et al. 2010, p. 138
- ^ Shu et al. 2004, p. 422
- Shu 2005, p. 2352
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.
- Hou, Xian-guang; Siveter, David J.; Siveter, Derek J.; Aldridge, Richard J.; Cong, Pei-yun; Gabbott, Sarah; Ma, Xiao-ya; Purnell, Mark A.; Williams, Mark (2017). "Bilateria of Uncertain Affinity". The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life (2 ed.). pp. 264–271. doi:10.1002/9781118896372.ch25.
- Shu, Degan (October 2005). "On the Phylum Vetulicolia". Chinese Science Bulletin. 50: 2342–2354. doi:10.1007/BF03183746. Retrieved 1 October 2024.
- 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.
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