Ichnological aspects of the Aquidauana Formation (Upper Carboniferous, Itararé Group, Brazil): An arthropod-colonized glacial setting

Barros, Gabriel Eduardo Baréa de; Becker-Kerber, Bruno; Sedorko, Daniel; Lima, João Henrique Dobler; Pacheco, Mírian Liza Alves Forancelli

doi:10.1016/j.palaeo.2021.110575

Cited by 8 publications

(18 citation statements)

References 86 publications

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“…Examples with continuous medial linear impressions have tracks with a more oblique angle to the midline than those with intermittent medial imprints (based on de Barros et al . 2021).…”

Section: Systematic Ichnologymentioning

confidence: 99%

“…de Barros et al . (2021) suggested that the producer of U. terere (described as Umfolozia sinuosa in de Barros et al . 2021, p. 8, fig.…”

Section: Systematic Ichnologymentioning

confidence: 99%

“…(2021) suggested that the producer of U. terere (described as Umfolozia sinuosa in de Barros et al . 2021, p. 8, fig. 4a–c) was the same as that of Irichnus saltatorius (formerly Warvichnium ulbrichi morphotype B in de Barros et al .…”

Section: Systematic Ichnologymentioning

confidence: 99%

“…Some material ascribed to Umfolozia probably represents a new ichnospecies, and hence the ichnogenus is in need of revision (de Barros et al . 2021). Warvichnium has been ichnotaxonomically problematic because it groups many morphologies into one ichnospecies (e.g.…”

mentioning

confidence: 99%

“…Another source of contention is the record of Warvichnium in Palaeozoic deposits (de Barros et al . 2021), having previously been restricted to the Quaternary (Buatois & Mángano 2018).…”

mentioning

confidence: 99%

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A review of the glacial environment arthropod trace fossilsUmfoloziaandWarvichniumwith the description of new ichnotaxa

de Barros,

de C. P. e M. Peixoto,

Lima

et al. 2023

Papers in Palaeontology

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Trace fossils are important records of the presence and behaviour of animals in the past, especially in deposits where few body fossils are preserved. They tend to provide the main palaeobiological record for past glacial environments, and are thus very important for understanding the ecology of these palaeoenvironments. Two ichnogenera are common in glacial sediments: Umfolozia and Warvichnium. Both Umfolozia and Warvichnium are attributed to arthropods; the former occurs across the Late Palaeozoic Ice Age (LPIA) and the latter occurs during both the LPIA and the Quaternary glacial event. Here, we review the stratigraphic record, ichnotaxonomy, palaeoecology, palaeoenvironments and possible tracemakers of these two ichnogenera. In addition to assessing morphological ichnotaxobases, we use multivariate morphometric analysis and inferential statistical tests to support our ichnotaxonomic revisions. The diagnosis of Umfolozia is revised, with the description of a new ichnospecies, Umfolozia terere, and the emendation of Umfolozia riojana (formerly Umfolozia longula). We revised Warvichnium, maintaining the original Warvichnium ulbrichi and allocating two morphologies to the ichnogenus Irichnus: Irichnus saltatorius and I. paripinnatus isp. nov. These trace fossils record several behaviours, and have implications for palaeoenvironmental interpretations and the evolution of invertebrate ecosystems. Using Umfolozia and Warvichnium as case studies, we demonstrate the application of morphometric analysis in ichnotaxonomy and highlight this as a tool that may be applied to other trace‐fossil groups.

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“…Examples with continuous medial linear impressions have tracks with a more oblique angle to the midline than those with intermittent medial imprints (based on de Barros et al . 2021).…”

Section: Systematic Ichnologymentioning

confidence: 99%

“…de Barros et al . (2021) suggested that the producer of U. terere (described as Umfolozia sinuosa in de Barros et al . 2021, p. 8, fig.…”

Section: Systematic Ichnologymentioning

confidence: 99%

Section: Systematic Ichnologymentioning

confidence: 99%

mentioning

confidence: 99%

“…Another source of contention is the record of Warvichnium in Palaeozoic deposits (de Barros et al . 2021), having previously been restricted to the Quaternary (Buatois & Mángano 2018).…”

mentioning

confidence: 99%

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