Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-19T10:43:04.016Z Has data issue: false hasContentIssue false
  • English
  • Français

The Lower Cambrian crustacean Pectocaris from the Chengjiang biota, Yunnan, China

Published online by Cambridge University Press:  20 May 2016

Xian-Guang Hou ,
Jan Bergström  and
Guang-Hui Xu
Xian-Guang Hou
Affiliation:
1Yunnan Research Center for Chengjiang Biota, Yunnan University, Kunming 650091, China
Jan Bergström
Affiliation:
2Department of Palaeozoology, Swedish Museum of Natural History, S-104 05 Stockholm
Guang-Hui Xu
Affiliation:
1Yunnan Research Center for Chengjiang Biota, Yunnan University, Kunming 650091, China
Get access Rights & Permissions [Opens in a new window]

Abstract

New specimens of the arthropod Pectocaris Hou, 1999 have yielded important new information. The entire body of Pectocaris spatiosa Hou, 1999 is known. Odaraia? eurypetala Hou and Sun, 1988 is transferred to Pectocaris. In addition to the finlike lateral flukes, setal imprints and new specimen indicate a median fluke as in the Burgess Shale Odaraia. The cephalic region bears stalked eyes and the crustacean characteristics first and second antennae and mandibles. The mandibles are succeeded by about 53 pairs of branchiopod-type appendages, each corresponding to a head or body segment. Branchiopod characters include endites with setae turned backwards, the elongation of the telson, and its fluke-shaped rami. Pectocaris has a fairly basal position in the phylogenetic tree of the extant crustaceans and probably belongs to the branchiopod crustaceans. It is the first arthropod with definite crustacean characteristics described from strata from below the Upper Cambrian.

Type
Research Article
Information
Journal of Paleontology , Volume 78 , Issue 4 , July 2004 , pp. 700 - 708
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

Bergström, J., and Hou, X.-G. 2003. Cambrian arthropods: a lesson in convergent evolution, p. 89–96. In Legakis, A., Sfenthourakis, S., Polymeni, R., and Thessalou-Legaki, M. (eds.), The New Panorama of Animal Evolution. Proceedings of the 18th International Congress in Zoology.Google Scholar
Bergström, J., and Hou, X.-G. 2003. Arthropod origins. Bulletin of Geoscience, 78:323–334.Google Scholar
Briggs, D. E. G. 1976. The arthropod Branchiocaris n.gen., Middle Cambrian, Burgess Shale, British Columbia. Geological Survey of Canada Bulletin, 264:1–29.Google Scholar
Briggs, D. E. G. 1981. The arthropod Odaraia alata Walcott, Middle Cambrian, British Columbia. Philosophical Transactions of the Royal Society, London B, 291:541–584.Google Scholar
Budd, G. E. 2002. A palaeontological solution to the arthropod head problem. Nature, 417:271–275.Google Scholar
Chen, J.-Y., Vannier, J., and Huang, D.-Y. 2001. The origin of crustaceans: new evidence from the Early Cambrian of China. Proceedings of the Royal Society of London B, 268:2181–2187.Google Scholar
Chlupáč, I. 1995. Lower Cambrian arthropods from the Paseky Shale (Barrandian area, Czech Republic). Journal of the Czech Geological Society, 40(4):9–36.Google Scholar
Hou, X.-G. 1987. Three new large arthropods from Lower Cambrian, Chengjiang, eastern Yunnan. Acta Palaeontologica Sinica, 26(3):272–285. (In Chinese with English summary)Google Scholar
Hou, X.-G. 1999. New rare bivalved arthropods from the Lower Cambrian Chengjiang fauna, Yunnan, China. Journal of Paleontology, 73(1):102–116.Google Scholar
Hou, X.-G., and Bergström, J. 1997. Arthropods of the Lower Cambrian Chengjiang fauna, southwest China. Fossils and Strata, 45:1–116.Google Scholar
Hou, X.-G., Bergström, J., Wang, H.-F., Feng, X.-H., and Chen, A.-L. 1999. The Chengjiang Fauna. Exceptionally Well-Preserved Animals from 530 Million Years Ago. Yunnan Science and Technology Press, Kunming, 170 p. (In Chinese with English summary)Google Scholar
Hou, X.-G., and Sun, W.-G. 1988. Discovery of Chengjiang fauna at Meichucun, Jinning, Yunnan. Acta palaeontologica Sinica, 27(1):1–12. (In Chinese with English summary)Google Scholar
Latreille, P. A. 1817. Les crustacés, les arachnids et les insects. In G. Cuvier, La Régne Animal Distribué d'après son Organisation, pour Servir de Base à l'Histoire Naturelle des Animaux et d'Introduction à l'Anatomie Comparée, edition 1, Pt. 3. Déterville, Paris, 653 p.Google Scholar
Müller, K. J. 1983. Crustacea with preserved soft parts from the Upper Cambrian of Sweden. Lethaia, 16(2):93–109.CrossRefGoogle Scholar
Müller, K. J., and Walossek, D. 1985. Skaracarida, a new order of Crustacea from the Upper Cambrian of Västergötland, Sweden. Fossils and Strata, 17:1–65.Google Scholar
Müller, K. J., and Walossek, D. 1986. Martinssonia elongata gen. et sp. n., a crustacean euarthropod from the Upper Cambrian of Sweden. Zoological Scripta, 15:73–92.Google Scholar
Müller, K. J., and Walossek, D. 1988. External morphology and larval development of the Upper Cambrian maxillopod Bredocaris admirabilis. Fossils and Strata, 23:1–70.Google Scholar
Novozhilov, N. I. 1960. Podklass Pseudocrustacea, p. 199. In Orlov, Yu. A. (ed.), Osnovy Paleontologii, Arthropoda, Trilobitomorpha and Crustacea. Nedra, Moscow.Google Scholar
Pennant, T. 1777. Crustacea, Mollusca, Testacea. British Zoology, 4:1–136.Google Scholar
Rolfe, W. D. I. 1969. Phyllocarida, p. R296–R331. In Moore, R.C. (ed.), Treatise on Invertebrate Paleontology, Pt. R, Arthropoda 4. Geological Society of America and the University of Kansas, Lawrence.Google Scholar
Sanders, H. L. 1963a. Significance of the Cephalocarida, p. 163–175. In Whittington, H. B. and Rolfe, W. D. I. (eds.), Phylogeny and Evolution of Crustacea. Museum of Comparative Zoology Special Publications, Cambridge, Massachusetts.Google Scholar
Sanders, H. L. 1963b. The Cephalocarida. Functional morphology, larval development, comparative external anatomy. Memoirs of the Connecticut Academy of Arts & Science, 15:1–80.Google Scholar
Simonetta, A. M., and Cave, L. Delle 1975. The Cambrian non-trilobite arthropods from the Burgess Shale of British Columbia.: a study of their comparative morphology taxonomy and evolutionary significance. Palaeontographica Italica, 69:1–37.Google Scholar
Siveter, D. J., Williams, M., and Walossek, D. 2001. A phosphatocopid crustacean with appendages from the Lower Cambrian. Science, 293:479–481.Google Scholar
St⊘rmer, L. 1944. On the relationships and phylogeny of fossil and Recent Arachnomorpha. Skrifter utgitt av det Norske Vidensk Academi i Oslo, 5:1–158.Google Scholar
St⊘rmer, L. 1959. Chelicerata, Merostomata, p. P1–P41. In Moore, R.C. (ed.), Treatise on Invertebrate Paleontology, Pt. P, Arthropoda 2. Geological Society of America and the University of Kansas, Lawrence.Google Scholar
Vannier, J., and Chen, J.-Y. 2000. The Early Cambrian colonization of pelagic niches exemplified by Isoxys (Arthropoda). Lethaia, 33:295–311.Google Scholar
Walcott, C. D. 1890. The fauna of the Lower Cambrian or Olenellus Zone. Reports of the U.S. Geological Survey, 10:509–763.Google Scholar
Walcott, C. D. 1912. Middle Cambrian Branchiopoda, Malacostraca, Trilobita and Merostomata. Cambrian geology and paleontology. Smithsonian Miscellaneous Collections, 57:109–144.Google Scholar
Walossek, D. 1993. The Upper Cambrian Rehbachiella and the phylogeny of Branchiopoda and Crustacea. Fossils and Strata, 32:1–202.CrossRefGoogle Scholar
Walossek, D., and Müller, K. J. 1990. Upper Cambrian stem-lineage crustaceans and their bearing upon the monophyletic origin of Crustacea and the position of Agnostus. Lethaia, 23:409–427.Google Scholar
Walossek, D., and Müller, K. J. 1992. The ‘alum shale window’—contribution of ‘orsten’ arthropods to the phylogeny and origin of Crustacea. Acta Zoologica, 73:305–312.CrossRefGoogle Scholar
Wills, M. A. 1998. A phylogeny of recent and fossil Crustacea derived from morphological characters, p. 189–209. In Fortey, R. A. and Thomas, R. H. (eds.), Arthropod Relationships. Systematics Association Special Volume, series 55. Chapman & Hall, London.Google Scholar
Zhang, W.-T., and Hou, X.-G. 1985. Preliminary notes on the occurrence of the unusual trilobite Naraoia in Asia. Acta Palaeontologica Sinica, 24(6):591–595. (In Chinese with English summary)Google Scholar