Palaeoscolecid scleritome fragments with Hadimopanella plates from the early Cambrian of South Australia

Timothy P. Topper, Glenn A. Brock, Christian B. Skovsted, John R. Paterson

    Research output: Contribution to journalArticlepeer-review

    37 Citations (Scopus)
    4 Downloads (Pure)

    Abstract

    Phosphatized articulated palaeoscolecid scleritome fragments with attached Hadimopanella Gedik, 1977 plates are described from the lower Cambrian Mernmerna Formation of South Australia. Hadimopanella is principally known from single, isolated, button-shaped, phosphatic sclerites. The new articulated material from South Australia reveals for the first time the configuration of plates referable to Hadimopanella within the scleritome. The scleritome fragments represent the main trunk sections of the cuticle with anterior and posterior terminations lacking. Each annulus on the trunk is ornamented by rows of irregularly alternating Hadimopanella plates. The large majority of plates display a single, centrally located, conical node referable to the form species H. apicata Wrona, 1982. However, individual plates display considerable morphological variation with plates situated along the flattened trunk margin identical to the form species H. antarctica Wrona, 1987. The South Australian material displays the detailed scleritome configuration of cuticular plates and platelets and demonstrates irrefutably that plates of the form species H. apicata and H. antarctica occur as mineralized cuticular elements on the same palaeoscolecid scleritome.

    Original languageEnglish
    Pages (from-to)86-97
    Number of pages12
    JournalGeological Magazine
    Volume147
    Issue number1
    DOIs
    Publication statusPublished - Jan 2010

    Bibliographical note

    Copyright 2009 Cambridge University Press. Article originally published in Geological Magazine, vol. 147, No. 1, pp. 86-97. The original article can be found at http://dx.doi.org/10.1017/S0016756809990082.

    Fingerprint

    Dive into the research topics of 'Palaeoscolecid scleritome fragments with Hadimopanella plates from the early Cambrian of South Australia'. Together they form a unique fingerprint.

    Cite this