Hostname: page-component-848d4c4894-wzw2p Total loading time: 0 Render date: 2024-05-15T04:23:06.049Z Has data issue: false hasContentIssue false
  • English
  • Français

An obolellate brachiopod with soft-part preservation from the Early Cambrian Chengjiang fauna of China

Published online by Cambridge University Press:  14 July 2015

Zhifei Zhang ,
Lars E. Holmer ,
Leonid Popov  and
Degan Shu
Zhifei Zhang
Affiliation:
1Early Life Institute and Department of Geology, State Key Laboratory for Continental Dynamics, Northwest University, Xi'an 710069, China,
Lars E. Holmer
Affiliation:
2Department of Earth Sciences, Palaeobiology, Villav. 16, S-75236 Uppsala, Sweden,
Leonid Popov
Affiliation:
3Department of Geology, National Museum of Wales, Cathays Park, Cardiff CF10 3NP, Wales, UK,
Degan Shu
Affiliation:
1Early Life Institute and Department of Geology, State Key Laboratory for Continental Dynamics, Northwest University, Xi'an 710069, China,
Get access Rights & Permissions [Opens in a new window]

Abstract

The obolellates represent a poorly understood group of the oldest known cosmopolitan calcareous rhynchonelliform brachiopods. They made their first appearance in the early Atdabanian and became extinct at the end of the Middle Cambrian. Consequently, any information concerning the soft anatomy of this ephemeral lineage of brachiopods has great phylogenetic significance. This is the first report on two specimens of an obolellate with fine preservation of soft parts including the pedicle, marginal setae and possible imprints of a spiral lophophore, recovered from the early Cambrian Chengjiang Konservat Lagerstätte of Kunming, southern China. The setae are thin and densely fringed along the shell margin. The stout pedicle is distinctly composed of densely stacked tabular bodies, lacking a central coelomic lumen; it emerges through a possible foramen, and slightly tapers posteriorly with the distal end attached to exoskeletons of other organisms.

Type
Research Article
Information
Journal of Paleontology , Volume 85 , Issue 3 , May 2011 , pp. 460 - 463
Copyright
Copyright © The Paleontological Society 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bassett, M. G., Popov, L. E., and Egerquist, E. 2008. Pedicle preservation in a Silurian rhynchonelliformean brachiopod from Herefordshire, England: soft-tissue or an artefact of interpretation? Transactions of the Royal Society of Edinburgh: Earth and Environmental Science, 98:303–308.CrossRefGoogle Scholar
Geyer, G. 1994. A new obolellid brachiopod from the Lower Cambrian of Morocco. Journal of Paleontology, 68:995–1002.CrossRefGoogle Scholar
Geyer, G. and Mergl, M. 1995. Mediterranean representatives of the obolellid Trematobolus Matthew (Brachiopoda) and a review of the genus. Paläontologische Zeischrift, 69:179–209.Google Scholar
Holmer, L. E. and Caron, J. B. 2006. A spinose stem group brachiopod with pedicle from the Middle Cambrian Burgess Shale. Acta Zoologica, 87:273–290.CrossRefGoogle Scholar
Holmer, L. E., Stolk Pettersson, S., Skovsted, C. B., Balthasar, U., and Popov, L. E. 2009. The enigmatic Early Cambrian Salanygolina–A Stem group of Rhynchonelliform Chileate brachiopods? Palaeontology, 52:1–10.CrossRefGoogle Scholar
Holmer, L. E., Skovsted, C. B., Brock, G. A., and Popov, L. E. In press. An Early Cambrian chileate brachiopod from South Australia and its phylogenetic significance. Memoirs of the Association of Australasian Palaeontologist.Google Scholar
Jin, Y. G., Hou, X. G., and Wang, H. Y. 1993. Lower Cambrian pediculate lingulids from Yunnan, China. Journal of Palaeontology, 67:788–798.Google Scholar
Matthew, G. F. 1895. Traces of the Ordovician System on the Atlantic coast. Royal Society of Canada, Transactions, Ser. 1, sect. 4, p. 253–279, 2 pl. Google Scholar
Pelman, Y. U. L. 1977. Ranne- i srednekembriiskie bezzamkovye brakhiopody Sibirskoi platformy: Akademiya Nauk SSSR, Sibirskoe otdelenie, Institut geologii i geofiziki (IGIG), Trudy, v. 316, 68 p., 24 pl., 22 text-fig. (Early and Middle Cambrian inarticulate brachiopods of the Siberian Platform).Google Scholar
Pettersson Stolk, S., Holmer, L. E., and Caron, J. B. 2010. First record of the brachiopod Lingulella waptaensis with pedicle from the Middle Cambrian Burgess Shale. Acta Zoologica, 91:150–162.Google Scholar
Popov, L. E. and Holmer, L. E. 2000. Class Obolellata, p. 200–208. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology, Part H, Brachiopoda. Vol. 2. The Geological Society of America (Boulder, Colorado) and The University of Kansas Boulder (Lawrence, Kansas).Google Scholar
Popov, L. E., Holmer, L. E., and Bassett, M. G. 1996. Radiation of the earliest calcareous brachiopods, p. 209–213. In Copper, P. and Jin, J. (eds), Brachiopods. Proceedings of the Third International Brachiopod Congress, Sudbury, Ontario, Canada, 2-5 September, 1995.Google Scholar
Popov, L. E., Bassett, M. G., Holmer, L. E., Skovsted, C. B., and Yzuykov, M. A. 2010. Earliest ontogeny of early Palaeozoic Craniiformea: implications for brachiopod phylogeny. Lethaia, 43:323–333.CrossRefGoogle Scholar
Popov, L. E., Egerquist, E., and Holmer, L. E. 2007. Earliest ontogeny of Middle Ordovician rhynchonelliform brachiopods (Clitambonitoidea and Polytoechioidea): implications for brachiopod phylogeny. Lethaia, 40:85–96.CrossRefGoogle Scholar
Rowell, A. J., 1962. The genera of the brachiopod superfamilies Obolellacea and Siphonotretacea. Journal of Paleontology, 36:136–152.Google Scholar
Rowell, A. J. 1965. Class Inarticulata, p. H260–296. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Part H. Brachiopoda. Geological Society of America and University of Kansas Press, Lawrence, Kansas, 927 p.Google Scholar
Ushatinskaya, G. T. and Malakhovskaya, Ya. E. 2006. Pervyye brachiopody s karbonatnym skeletom: poyavleniye, rasseleniye, stroenie stenki rakoviny, p. 177–192. In Rozhnov, S. N. (ed.), Evolyutsiya Buiosfery i bioraznoobraziya. K 70-letiyu Rozanova, A. Yu. Tovarishestvo nauchnykh izdanii KMK, Moscow, 600 p.Google Scholar
Walcott, C. D. 1890. The fauna of the Lower Cambrian or Olenellus Zone. United States Geological Survey, Annual Report, v. 10, pt. 1, p. 515–774, pl. 50–98.Google Scholar
Walcott, C. D. 1908. Cambrian Geology and Paleontology, pt. 3—Cambrian Brachiopoda, descriptions of new genera and species: Smithsonian Miscellaneous Collections, v. 53, p. 53–137, pl. 7-12.Google Scholar
Williams, A., Carlson, S. J., Brunton, C. H. C., Holmer, L. E., and Popov, L. E. 1996. A supra-ordinal classification of the Brachiopoda. Philosophical Transactions of the Royal Society: Biological Sciences, 35:1171–1193.Google Scholar
Zhang, Z. F., Han, J., Zhang, X. L., Liu, J. N., and Shu, D. G. 2003. Pediculate brachiopod Diandongia pista from the Lower Cambrian of South China. Acta Geologica Sinica (English Edition), 77:288–293.Google Scholar
Zhang, Z. F., Han, J., Zhang, X. L., Liu, J. N., and Shu, D. G. 2004. Soft-tissue preservation in the Lower Cambrian linguloid brachiopod from South China. Acta Palaeontologica Polonica, 49:259–266.Google Scholar
Zhang, Z. F., Shu, D. G., Han, J., and Liu, J. N. 2005. Morphoanatomical differences of the Early Cambrian Chengjiang and Recent linguloids and their implications. Acta Zoologica, 86:277–288.CrossRefGoogle Scholar
Zhang, Z. F., Shu, D. G., Emig, C. C., Zhang, X. L., Han, J., Liu, J. N., Li, Y., and Guo, J. F. 2007. Rhynchonelliformean brachiopods with soft-tissue preservation from the Lower Cambrian Chengjiang Lagerstätte of South China. Palaeontology, 50:1391–1402.Google Scholar
Zhang, Z. F., Robson, S. P., Shu, D. G., and Emig, C. C. 2008. Early Cambrian radiation of brachiopods: A perspective from South China. Gondwana Research, 14:241–254.Google Scholar
Zhang, Z. F., Han, J., Wang, Y., Emig, C. C., and Shu, D. G. 2010. Epibionts on the lingulate brachiopod Diandongia from the Early Cambrian Chengjiang Lagerstatte, South China. Proceedings of Royal Society of London Proceedings, Series. B, 277:175–181.Google Scholar
Zhang, Z. F., Holmer, L. E., Ou, Q., Han, J. and Shu, D. G. 2011. The exceptionally preserved Early Cambrian stem rhynchonelliform brachiopod Longtancunella and its implications. Lethaia (in press).CrossRefGoogle Scholar
Zhang, X. L., Shu, D. G., Li, Y., and Han, J. 2001. New sites of Chengjiang fossils: crucial windows on the Cambrian explosion. Journal of Geological Society of London, 158:211–218.Google Scholar