The arthropod trace fossil Cruziana and associated ichnotaxa from the Lower Permian Abo Formation, Socorro County, New Mexico

N.J. Minter, S.G. Lucas

    Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

    Abstract

    A trace fossil assemblage consisting of Cruziana problematica, Diplichnites gouldi, Diplichnites isp., Monomorphichnus isp., Palaeophycus tubularis, Rusophycus carbonarius, Striatichnium cf. S. Natalis and compound traces of C. problematica × R. carbonarius is reported from the Lower Permian Abo Formation of the Joyita Hills in Socorro County, New Mexico. The assemblage is an example of the Scoyenia ichnofacies and indicates deposition under a continental regime during the last phase of Abo sedimentation in central New Mexico. It is atypical of Abo trace fossil assemblages in that it is dominated by striated bilobate traces whereas other assemblages from the Abo Formation are dominated by tetrapod and arthropod trackways. This reflects the production of this assemblage within a small ephemeral water body on a floodplain whereas other Abo assemblages formed during fleeting preservation windows on exposed surfaces after sheetfloods on the floodplain. The majority of trace fossils are attributed to notostracan branchiopod crustaceans, which are adapted to inhabit ephemeral water bodies.
    Original languageEnglish
    Title of host publicationGeology of the Chupadera Mesa Region
    Subtitle of host publicationNew Mexico Geological Society 60th annual field conference October 7-10, 2009
    EditorsVirgil W. Leuth, Spencer G. Lucas, Richard M. Chamberlain
    Place of PublicationSocorro
    PublisherNew Mexico Geological Society
    Pages291-298
    ISBN (Print)1585460958
    Publication statusPublished - 2009

    Publication series

    NameNew Mexico Geological Society guidebook
    PublisherNew Mexico Geological Society
    Volume60
    ISSN (Print)0077-8567

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