The cuticle of the enigmatic arthropod Phytophilaspis and biomineralization in Cambrian arthropods

Authors

  • JIH-PAI LIN,

    1. Jih-Pai Lin [jplin@nigpas.ac.cn], current address: State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China and Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA; Andrey Yu Ivantsov [ivancov@paleo.ru], Palaeontological Institute, Russian Academy of Sciences, ul. Profsoyuznaya 123, Moscow 117997, Russia; Derek E. G. Briggs [derek.briggs@yale.edu], Department of Geology and Geophysics and Peabody Museum of Natural History, Yale University, New Haven, CT 06520, USA;
    Search for more papers by this author
  • ANDREY YU IVANTSOV,

    1. Jih-Pai Lin [jplin@nigpas.ac.cn], current address: State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China and Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA; Andrey Yu Ivantsov [ivancov@paleo.ru], Palaeontological Institute, Russian Academy of Sciences, ul. Profsoyuznaya 123, Moscow 117997, Russia; Derek E. G. Briggs [derek.briggs@yale.edu], Department of Geology and Geophysics and Peabody Museum of Natural History, Yale University, New Haven, CT 06520, USA;
    Search for more papers by this author
  • DEREK E. G. BRIGGS

    1. Jih-Pai Lin [jplin@nigpas.ac.cn], current address: State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China and Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA; Andrey Yu Ivantsov [ivancov@paleo.ru], Palaeontological Institute, Russian Academy of Sciences, ul. Profsoyuznaya 123, Moscow 117997, Russia; Derek E. G. Briggs [derek.briggs@yale.edu], Department of Geology and Geophysics and Peabody Museum of Natural History, Yale University, New Haven, CT 06520, USA;
    Search for more papers by this author

Abstract

Lin, J.-P., Ivantsov, A.Y. & Briggs, D.E.G. 2011: The cuticle of the enigmatic arthropod Phytophilaspis and biomineralization in Cambrian arthropods. Lethaia, Vol. 44, pp. 344–349.

Many non-trilobite arthropods occur in Cambrian Burgess Shale-type (BST) biotas, but most of these are preserved in fine-grained siliciclastics. Only one important occurrence of Cambrian non-trilobite arthropods, the Sinsk biota (lower Sinsk Formation, Botomian) from the Siberian Platform, has been discovered in carbonates. The chemical compositions of samples of the enigmatic arthropod Phytophilaspis pergamenaIvantsov, 1999 and the co-occurring trilobite Jakutus primigenius Ivantsov in Ponomarenko, 2005 from this deposit were analysed. The cuticle of P. pergamena is composed of mainly calcium phosphate and differs from the cuticle of J. primigenius, which contains only calcium carbonate. Phosphatized cuticles are rare among large Cambrian arthropods, except for aglaspidids and a few trilobites. Based on recent phylogenetic studies, phosphatization of arthropod cuticle is likely to have evolved several times. □arthropod cuticle, Burgess Shale-type preservation, fossil-diagenesis, phosphatization.

Ancillary