Ichnotaxonomy of the Cambrian Spence Shale Member of the Langston formation, Wellsville Mountains, Northern Utah, USA

Hammersburg, Sean Robert; Hasiotis, Stephen T.; Robison, Richard A.

doi:10.17161/1808.26428

Cited by 5 publications

(7 citation statements)

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“…A. multiformis traces, unlike classic Acripes (Matthew, 1910), possess paramedial imprints, albeit inconsistently. Hammersburg, Hasiotis & Robison (2018), Häntzschel (1975), Miller (1996), and Pemberton, MacEachern & Gingras (2007 all supported classic Acripes as a junior synonym of Diplichnites; the issue of synonymy is beyond the scope of this paper, but we note at least that the tracks in fossils that Gand et al (2008) called A. multiformis differ from SGDS 1290 in the same ways that Diplichnites tracks do (see above). Lastly, Knecht et al (2009: figs.…”

Section: Arthropod Repichnia Possessing Paired Paramedial Impressionsmentioning

confidence: 64%

“…Diplichnites (possibly including Acripes per Häntzschel [1975] and Hammersburg, Hasiotis & Robison [2018]; also see below) tracks span a range of morphologies. D. aenigma (Fig.…”

Section: Comparisons To Arthropod Repichnial Ichnotaxamentioning

confidence: 99%

“…Tracks (or series of segments) are oriented oblique (Types 1 and 2 of Gaillard et al, 2005) or parallel (Types 3 and 4 of Gaillard et al, 2005) to the trackway axis, and approximately symmetrically arranged in two parallel rows (Gaillard et al, 2005;Hitchcock, 1865) that are somewhat closer together than are those of the morphologically similar Diplichnites. Types 3 and 4 of Gaillard et al (2005) morphologically grade into Diplopodichnus (Uchman et al, 2011). Hammersburg, Hasiotis & Robison (2018 suggested that Pterichnus comprises undertracks of Lithographus and is thus a junior synonym of that ichnotaxon.…”

Section: Peerj Reviewingmentioning

confidence: 99%

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Peer Review #2 of "A trace fossil made by a walking crayfish or crayfish-like arthropod from the Lower Jurassic Moenave Formation of southwestern Utah, USA (v0.1)"

Carvalho¹

2021

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New invertebrate trace fossils from the Lower Jurassic Moenave Formation at the St.George Dinosaur Discovery Site at Johnson Farm (SGDS) continue to expand the ichnofauna at the site. A previously unstudied arthropod locomotory trace, SGDS 1290, comprises two widely spaced, thick, gently undulating paramedial impressions flanked externally by small, tapered to elongate tracks with a staggered to alternating arrangement. The specimen is not a variant of any existing ichnospecies, but bears a striking resemblance to modern, experimentally generated crayfish walking traces, suggesting a crayfish or crayfish-like maker for the fossil. Because of its uniqueness, we place it in a new ichnospecies, Siskemia eurypyge. It is the first fossil crayfish or crayfishlike locomotion trace ever recorded.

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Section: Arthropod Repichnia Possessing Paired Paramedial Impressionsmentioning

confidence: 64%

“…Diplichnites (possibly including Acripes per Häntzschel [1975] and Hammersburg, Hasiotis & Robison [2018]; also see below) tracks span a range of morphologies. D. aenigma (Fig.…”

Section: Comparisons To Arthropod Repichnial Ichnotaxamentioning

confidence: 99%

Section: Peerj Reviewingmentioning

confidence: 99%

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Peer Review #2 of "A trace fossil made by a walking crayfish or crayfish-like arthropod from the Lower Jurassic Moenave Formation of southwestern Utah, USA (v0.1)"

Carvalho¹

2021

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“…4F) comprises circular to crescentic tracks in closely appressed sets of up to six that are oriented oblique to the trackway axis; tracks often overlap to form V-shaped structures (Walker, 1985), unlike in SGDS 1290. Hasiotis & Robison (2018); also see below) tracks span a range of morphologies. D. aenigma (Fig.…”

Section: Comparisons To Arthropod Repichnial Ichnotaxamentioning

confidence: 97%

A trace fossil made by a walking crayfish or crayfish-like arthropod from the Lower Jurassic Moenave Formation of southwestern Utah, USA

Rose

Harris

Milner³

2021

PeerJ

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New invertebrate trace fossils from the Lower Jurassic Moenave Formation at the St. George Dinosaur Discovery Site at Johnson Farm (SGDS) continue to expand the ichnofauna at the site. A previously unstudied arthropod locomotory trace, SGDS 1290, comprises two widely spaced, thick, gently undulating paramedial impressions flanked externally by small, tapered to elongate tracks with a staggered to alternating arrangement. The specimen is not a variant of any existing ichnospecies, but bears a striking resemblance to modern, experimentally generated crayfish walking traces, suggesting a crayfish or crayfish-like maker for the fossil. Because of its uniqueness, we place it in a new ichnospecies, Siskemia eurypyge. It is the first fossil crayfish or crayfish-like locomotion trace ever recorded.

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“…Walter et al (1989, fig. 8B) also assigned very similar winding trails from the lower Cambrian of central Australia to Gordia sp., although examples of that ichnogenus are supposed to be characterized by massive infill (Fillion & Pickerill 1990;Wang et al 2009;Hammersburg et al 2018). Psammichnites Torell, 1870, as emended by Mángano and Buatois (2002), is distinguished by more prominent transverse ornament and a distinctive median ridge or series of mounds/pits.…”

Section: Remarksmentioning

confidence: 99%

Trace fossils, algae, invertebrate remains and new U-Pb detrital zircon geochronology from the lower Cambrian Torneträsk Formation, northern Sweden

McLoughlin

Vajda

Topper

et al. 2021

GFF

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Nineteen ichnotaxa, together with algal and invertebrate remains, and various pseudo-traces and sedimentary structures are described from the Torneträsk Formation exposed near Lake Torneträsk, Lapland, Sweden, representing a marked increase in the diversity of biotic traces recorded from this unit. The "lower siltstone" interval of the Torneträsk Formation contains mostly simple pascichnia, fodinichnia and domichnia burrows and trails of low-energy shoreface to intertidal settings. The assemblage has very few forms characteristic of high-energy, soft-sediment, foreshore or upper shoreface environments (representative of the Skolithos ichnofacies). Uranium-lead (U-Pb) LA-ICPMS analysis of zircon from a thin claystone layer within the "lower siltstone" interval yielded a maximum depositional age of 584 ± 13 Ma, mid-Ediacaran. Most of the zircon is represented by rounded detrital grains that yield dates between 3.3 and 1.0 Ga. Although the age of the basal sandstone-dominated interval of the Torneträsk Formation remains elusive owing to the absence of fossils, the ichnofossil suite from the overlying "lower siltstone" interval lacks deep arthropod trackways, such as Rusophycus and Cruziana, and is suggestive of a very early (Terreneuvian, possibly Fortunian) Cambrian age. The ichnofauna is otherwise similar to early Cambrian trace fossil assemblages from other parts of Baltica, regions further south in modern Europe, and from Greenland.

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Ichnotaxonomy of the Cambrian Spence Shale Member of the Langston formation, Wellsville Mountains, Northern Utah, USA

Cited by 5 publications

References 203 publications

Peer Review #2 of "A trace fossil made by a walking crayfish or crayfish-like arthropod from the Lower Jurassic Moenave Formation of southwestern Utah, USA (v0.1)"

Peer Review #2 of "A trace fossil made by a walking crayfish or crayfish-like arthropod from the Lower Jurassic Moenave Formation of southwestern Utah, USA (v0.1)"

A trace fossil made by a walking crayfish or crayfish-like arthropod from the Lower Jurassic Moenave Formation of southwestern Utah, USA

Trace fossils, algae, invertebrate remains and new U-Pb detrital zircon geochronology from the lower Cambrian Torneträsk Formation, northern Sweden

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