Retrodeformation of Carboniferous Trace Fossils From the Narragansett Basin, United States, Using Raindrop Imprints and Bedding-Cleavage Intersection Lineation as Strain Markers

Fichman, Meredith; Crespi, Jean; Getty, Patrick R.; Bush, Andrew M.

doi:10.2110/palo.2014.092

Cited by 13 publications

(9 citation statements)

References 57 publications

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“…Depositional environments were varied, including well-drained intermontane alluvial fans, braided to low-energy meandering streams, floodplains, lakes and swamps, and ephemeral ponds and pools (Mosher 1983 and references therein; tively small number of specimens from New England, so few that Lucas (2007) considered the tetrapod track record of the region to be "scattered". Rather than being the result of a scarcity of trace fossils, however, the dearth of ichnological studies in the Narragansett Basin most likely results from the rocks being inaccessible due to vegetation and urban sprawl, as well as from them being tectonically overprinted, which distorts and obscures the tracks (Fichman et al 2015). Recently there has been a resurgence in the study of vertebrate trace fossils in the Narragansett Basin (Getty et al 2010;Knecht and Benner 2008;Knecht et al 2009;Sproule and Getty 2012), which will help to illuminate the ichnofaunas from the New England region.…”

Section: Geological Contextmentioning

confidence: 99%

“…Commingled with the invertebrate trace fossils are abundant vertebrate ichnites, including: Batrachichnus and Characichnos, which were produced by temnospondyl amphibians; Notalacerta, which was produced by diapsid reptiles; and Undichna, which was produced by fish (Getty et al 2010). Tectonic strain has altered the shape of the fossils found in the quarry, but a recent retrodeformation study by Fichman et al (2015) provides a method by which accurate measurements can be obtained.…”

Section: Geological Contextmentioning

confidence: 99%

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Invertebrate trace fossils from the Pennsylvanian Rhode Island Formation of Massachusetts, USA

Getty¹,

Sproule²,

Stimson³

et al. 2017

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A large open-pit quarry in Plainville, Massachusetts, has yielded fourteen invertebrate ichnotaxa from the Pennsylvanian Rhode Island Formation of the Narragansett Basin. These traces include Cochlichnus anguineus, Diplichnites cuithensis, Diplichnites gouldi, Diplopodichnus biformis, Gordia carickensis, Helminthoidichites tenuis, Lockeia isp., Mitchellichnus cf. ferrydenensis, Planolites montanus, Siskemia elegans, Stiallia pilosa, Stiaria intermedia, Tonganoxichnus buildexensis and Narragansettichnus fortunatus new ichnogenus and ichnospecies. Specimens were collected from talus and the depositional environment has been inferred from sedimentary structures. The sediment-ology of the slabs on which the traces were preserved indicates that the rocks represent lake-margin and shallowlacustrine sedimentary facies. Distinct ichnofacies occur in the different sedimentary environments. The lake-margin traces belong to the Scoyenia ichnofacies and include traces of apterygote insects, arthropleurid myriapods, bivalved arthropods and vermiform animals in association with tracks of temnospondyl amphibians and diapsid reptiles. The lacustrine traces include arthropod trackways, fish trails and a newly named body imprint possibly produced by an aquatic mayfly larva. These shallow lacustrine traces are attributed to the Mermia ichnofacies.

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Section: Geological Contextmentioning

confidence: 99%

Section: Geological Contextmentioning

confidence: 99%

Invertebrate trace fossils from the Pennsylvanian Rhode Island Formation of Massachusetts, USA

Getty¹,

Sproule²,

Stimson³

et al. 2017

atgeol

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“…The unusual width of pedal footprints is probably due to tectonic widening, however this does not significantly affect the relative proportions between digits (Fichman et al . ). This is the first record of this track morphotype, the only similar material being described from the early Cisuralian of Nova Scotia, although with a relatively shorter pedal digit V (Voigt , fig.…”

Section: Systematic Palaeontologymentioning

confidence: 97%

New occurrences of tetrapod ichnotaxa from the Permian Orobic Basin (Northern Italy) and critical discussion of the age of the ichnoassociation

Marchetti

2016

Papers in Palaeontology

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Abstract:The late Cisuralian (Artinskian-Kungurian) is a key time interval for Permian tetrapod evolution. In all the main low-latitude Pangean sites, the fossil footprint record clearly shows a diversification and dispersal of non-synapsid amniote tracks compared to the early Cisuralian (AsselianSakmarian). However, data on latest Cisuralian (i.e. late Kungurian) sites are quite fragmentary. A new ichnotaxonomic study was carried out in the central part of the Orobic Basin, where the highly-fossiliferous Pizzo del Diavolo formation crops out and can potentially cover this gap in knowledge. The following tetrapod ichnogenera were identified: Amphisauropus, Batrachichnus, cf. Dimetropus, Dromopus, Erpetopus, Hyloidichnus, Limnopus, cf. Merifontichnus and Varanopus; they can be attributed to seymouriamorph and temnospondyl amphibians; pelycosaur synapsids; and diapsid, parareptile and captorhinid reptiles. Dimetropus and Merifontichnus are identified for the first time in the Permian of Italy. The ichnoassociation, in agreement with the radiometric dating of the underlying Cabianca formation, suggests a late Kungurian (latest Cisuralian) age for the Pizzo del Diavolo formation. It includes the youngest and most diverse non-synapsid amniote ichnofauna of the Cisuralian with five different ichnogenera and possibly six ichnospecies, and thus constitutes a key area for the study of eureptile and parareptile dispersal at low latitudes of Pangaea in the time span that immediately pre-dates the first therapsid synapsid radiation.

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“…Additionally, Willard and Cleaves greenschist-facies metamorphism, as evidenced by mineral assemblages and coal rank (Skehan et al 1979;Murray et al 2004;Connell 2006;Kirkwood 2006). Trace fossils collected in Plainville are visibly deformed (Willard and Cleaves 1930;Fichman et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Invertebrate traces include Cochlichnus anguineus, Diplichnites cuithensis, Diplichnites gouldi, Diplopodichnus biformis, Gordia carickensis, Helminthoidichites tenuis, Lockeia isp., Planolites isp., Siskemia elegans, Stiallia pilosa, Stiaria intermedia, Tonganoxichnus buildexensis and Umfolozia sinuosa (Getty et al 2013;personal observations). Vertebrates are represented by Undichna unisulca, Undichna isp., Batrachichnus plainvillensis, and Characichnos tridactylus, and Notalacerta missouriensis (Woodworth 1900;Fichman et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Megapezia longipes Willard and Cleaves 1930 from the Pennsylvanian Rhode Island Formation of Massachusetts: ichnotaxonomic status

Getty

2016

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The type and only specimen of the ichnospecies Megapezia longipes, from the Pennsylvanian Rhode Island Forma-tion of Plainville, Massachusetts, consists of two poorly defined tracks, one made by a manus and the other by a pes, rather than a single pedal imprint. Whereas the type species of Megapezia, Megapezia pineoi, has tetradactyl pedal imprints, the pes imprint of Megapezia longipes is pentadactyl, a feature that precludes assignment to this ichnogenus. Rather, the tracks share two characteristics with the ichnogenus Matthewichnus, namely elongate digits II and III on the manus, and a pes imprint oriented anterolaterally to the manus imprint, and are thus tentatively reassigned to that ichnogenus. Cf. Matthewichnus longipes is retained as a separate ichnospecies pending the collection of additional ma-terial that can be compared with other species within the ichnogenus. With the tentative reassignment of the Plainville tracks to Matthewichnus, Megapezia becomes monospecific and is no longer recorded in New England. The tracks are the first known occurrence of Matthewichnus from this region.

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Retrodeformation of Carboniferous Trace Fossils From the Narragansett Basin, United States, Using Raindrop Imprints and Bedding-Cleavage Intersection Lineation as Strain Markers

Cited by 13 publications

References 57 publications

Invertebrate trace fossils from the Pennsylvanian Rhode Island Formation of Massachusetts, USA

Invertebrate trace fossils from the Pennsylvanian Rhode Island Formation of Massachusetts, USA

New occurrences of tetrapod ichnotaxa from the Permian Orobic Basin (Northern Italy) and critical discussion of the age of the ichnoassociation

Megapezia longipes Willard and Cleaves 1930 from the Pennsylvanian Rhode Island Formation of Massachusetts: ichnotaxonomic status

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