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  1. Article

    Open Access

    Publisher Correction: New reconstruction of the Wiwaxia scleritome, with data from Chengjiang juveniles

    Zhifei Zhang, Martin R. Smith, Degan Shu in Scientific Reports (2023)

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    Article

    Protomelission is an early dasyclad alga and not a Cambrian bryozoan

    The animal phyla and their associated body plans originate from a singular burst of evolution occurring during the Cambrian period, over 500 million years ago1. The phylum Bryozoa, the colonial ‘moss animals’, ha...

    Jie Yang, Tian Lan, **-guang Zhang, Martin R. Smith in Nature (2023)

  3. Article

    Open Access

    Orthrozanclus elongata n. sp. and the significance of sclerite-covered taxa for early trochozoan evolution

    Orthrozanclus is a shell-bearing, sclerite covered Cambrian organism of uncertain taxonomic affinity, seemingly representing an intermediate between its fellow problematica Wiwaxia and Ha...

    Fangchen Zhao, Martin R. Smith, Zongjun Yin, Han Zeng, Guoxiang Li… in Scientific Reports (2017)

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    Article

    Hyoliths are Palaeozoic lophophorates

    Analysis of exceptionally preserved fossils of the Cambrian hyolith Haplophrentis leads to a proposed evolutionary relationship with Lophophorata, the group containing brachiopods and phoronids, on the basis of a...

    Joseph Moysiuk, Martin R. Smith, Jean-Bernard Caron in Nature (2017)

  5. Article

    Open Access

    New reconstruction of the Wiwaxia scleritome, with data from Chengjiang juveniles

    Wiwaxiids are a problematic group of scale-covered lophotrochozoans known from Cambrian Stages 3–5. Their imbricating dorsal scleritome of leaf-like scales has prompted comparison with various annelids and mol...

    Zhifei Zhang, Martin R. Smith, Degan Shu in Scientific Reports (2015)

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    Article

    Hallucigenia’s head and the pharyngeal armature of early ecdysozoans

    A re-analysis of the 508-million-year-old stem-group onychophoran Hallucigenia sparsa from the Burgess Shale shows that its anterior gut has structures that indicate evolutionary links with more disparate phyla s...

    Martin R. Smith, Jean-Bernard Caron in Nature (2015)

  7. No Access

    Article

    Hallucigenia’s onychophoran-like claws and the case for Tactopoda

    The claws of the Cambrian lobopodian Hallucigenia resemble the claws and jaws of extant onychophorans, establishing a close relationship between hallucigeniid lobopodians and onychophorans, resolving tardigrades ...

    Martin R. Smith, Javier Ortega-Hernández in Nature (2014)

  8. Article

    Open Access

    Articulated Wiwaxia from the Cambrian Stage 3 **aoshiba Lagerstätte

    Wiwaxia is a bizarre metazoan that has been interpreted as a primitive mollusc and as a polychaete annelid worm. Extensive material from the Burgess Shale provides a detailed picture of its morphology and ontogen...

    Jie Yang, Martin R. Smith, Tian Lan, **-bo Hou, **-guang Zhang in Scientific Reports (2014)

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    Article

    Primitive soft-bodied cephalopods from the Cambrian

    The 505-million-year-old Burgess Shales of British Columbia are justifiably famous for the exquisite preservation of their fossils — and the extreme oddity of many of them, such as Anomalocaris and Hallucigenia, ...

    Martin R. Smith, Jean-Bernard Caron in Nature (2010)