Trace fossils versus body fossils: Oldhamia recta revisited

Tacker, R. Chris; Martin, Anthony J.; Weaver, Patricia G.; Lawver, Daniel R.

doi:10.1016/j.precamres.2010.01.008

Cited by 13 publications

(13 citation statements)

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“…3A and 4E). Like many other Ediacaran fossil which are actually casts and moulds of the tubular structures Cohen et al, 2009;Gehling and Droser, 2009;Tacker et al, 2010), the Sonia tubular structures are probable remains of tube-like bodies and preserved as body fossils. Comparison of the present assemblage of the Sonia tubular structures with known and established The Ediacaran fossil rule out the possibilities of their being trace fossils.…”

Section: Trace Versus Body Fossilsmentioning

confidence: 96%

“…Associated microbial mats in the Sonia Sandstone played an important role in the preservation of these structures. Ediacaran fossil Oldhamia recta is one such fossil which is characterized by a dendritic pattern and debated for long for its nature as a trace or body fossil origin; but subsequently its nature has been favoured as a body fossil (Seilacher et al, 2005;Tacker et al, 2010). Preservation of the tubular structures in the form of cast and mould limits our understandings for the finer (anatomical) details of the organisms responsible for making them.…”

Section: Trace Versus Body Fossilsmentioning

confidence: 99%

“…In recent years, many new enigmatic forms, problematica and certain forms whose phylogenetic affinity remains open are recorded from Ediacaran sequences (Zhu et al, 2008;Cohen et al, 2009;Tacker et al, 2010;Sappenfield et al, 2011;Tang et al, 2011a, b;Ivantsov, 2013;Droser et al, 2014;Joel et al, 2014). Some of these forms were assigned to animal groups, and others were placed in the plant groups.…”

Section: Introductionmentioning

confidence: 99%

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Enigmatic Ediacaran megascopic bedding plane structures on the Sonia Sandstone, Jodhpur Group, Marwar Supergroup, India: seaweed or problematica?

Pandey

Шарма

2016

Geol. J.

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The present study discusses the origin and affinity of enigmatic Ediacaran bedding plane structures reported earlier from the Sonia Sandstone of the Marwar Supergroup (Ediacaran to Lower Cambrian). These forms are conspicuously large, non‐carbonaceous and three‐dimensionally preserved. Morphologically, these structures are not comparable with any known plant/animal fossil, trace fossil, microbially induced sedimentary structures (MISS) found in the Ediacaran assemblages or any other extant forms and are invariably associated with MISS. Past researches on these fossils did not resolve their affinity, form and function. The present forms have certain features akin to seaweed organization such as thallus, loop pattern within the thallus, variously positioned nodes/swellings, tapering at the end of thallus, branching pattern and rarely occurring holdfast‐like features. Systematic description, incorporating detailed morphological features, population size, their relationship with associated sediments and stratigraphic distribution, is based on the study of 54 specimens. Subtidal to intertidal models of depositional sedimentary environment, palaeoecology, biogenicity, affinity, taphonomic changes, association of these forms with MISS and other parameters are also discussed. A succession of plausible interpretations is offered; seaweed is the most likely interpretation. The Marwar Supergroup, thus, unravels some of the hitherto enigmatic forms of the Ediacaran Period (635–541 Ma). Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Trace Versus Body Fossilsmentioning

confidence: 96%

Section: Trace Versus Body Fossilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enigmatic Ediacaran megascopic bedding plane structures on the Sonia Sandstone, Jodhpur Group, Marwar Supergroup, India: seaweed or problematica?

Pandey

Шарма

2016

Geol. J.

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“…A statement was nonetheless published in Fedonkin et al (2007) that "Some other workers suggest that Oldhamia may even be a body fossil, some allying it with Aspidella (Runnegar, 1992)". Tacker et al (2010) cited Fedonkin et al (2007) stating that "Oldhamia was originally questioned as an Ediacaran trace fossil by Runnegar (1992), who affiliated it with the body fossil Aspidella. "…”

Section: Other Studies Of the Fossils At Issuementioning

confidence: 99%

“…The organisms responsible for creating Oldhamia traces were argued to have lived "probably between the earliest Cambrian and the middle Cambrian mostly in deep oceanic environments and more rarely in shallow ones. " Tacker et al (2010) argued that O. recta known from the Precambrian of North Carolina, U.S.A. potentially represents the body fossil of a rod-like organism and not a trace fossil falling within the scope of the ichnogenus Oldhamia.…”

Section: Other Studies Of the Fossils At Issuementioning

confidence: 99%

Who Was the First Person Known to Have Discovered Fossils of the Precambrian (Ediacaran) Organism Aspidella terranovica?

Minicucci

2017

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This article briefly examines the possible confusion pertaining to the discoveries of Precambrian (Ediacaran) fossils made in the self-governing British colony of Newfoundland in 1868 by the amateur naturalist, the Reverend Moses Harvey, and the subsequent description and naming of the fossil organism Aspidella terranovica in 1872 by Elkanah Billings, the father of Canadian paleontology. Both events could be misinterpreted as one transaction that began with the former event and ended with the latter event. Accounts published by Alexander Murray, the director of the Geological Survey of Newfoundland at the time, arguably may have inadvertently exacerbated the possibility for confusion. The determination of who first discovered fossils of A. terranovica and whose fossil material Billings primarily relied upon when he first described and named the taxon could be placed into doubt as a consequence. Although the confusion does not affect the undisputed priority that Billings holds in having described and named A. terranovica, the opportunity to remedy the confusion serves to benefit the historical record. The incomplete or ambiguous ascertaining and documenting of contextual information whenever an historically significant fossil discovery is made arguably may precipitate subsequent misinterpretations, distortions or omissions in the resulting historical narrative as it develops and becomes entrenched or mythologized in its retelling.RÉSUMÉCet article examine brièvement la confusion possible concernant les découvertes de fossiles Précambriens (Ediacaran) fabriqués dans la colonie Britannique autonome de Terre-Neuve en 1868 par le naturaliste amateur, le Révérend Moses Harvey, et la description et l'appellation suivantes de l'organisme fossile Aspidella terranovica en 1872 par Elkanah Billings, le père de la paléontologie Canadienne. Les deux événements pourraient être mal interprétés comme une transaction qui a commencé avec l'événement précédent et s'est terminée avec le dernier événement. Les comptes publiés par Alexander Murray, le directeur de la Commission Géologique de Terre-Neuve à l'époque, ont sans doute peut-être exacerbé par mégarde la possibilité de confusion. La détermination de qui a découvert les fossiles d'abord de A. terranovica et dont Billings s'appuyait principalement sur le matériel fossile dont il a d'abord décrit et nommé le taxon pourrait être mis en doute en conséquence. Bien que la confusion ne porte pas atteinte à la priorité incontestée que Billings détient en ayant décrit et nommé A. terranovica, la possibilité de remédier à la confusion sert à bénéficier du dossier historique. La constatation et la documentation incomplètes ou ambiguës de l'information contextuelle chaque fois qu'une découverte fossilifère historiquement significative peut être faite peut précipiter des interprétations, des distorsions ou des omissions subséquentes dans le récit historique résultant au fur et à mesure qu'il se développe et devient ancré ou mythologisé dans son récit.

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New Occurrences ofOldhamiain Eastern Yukon, Canada: Stratigraphic Context and Implications for Cambrian Deep-Marine Biostratigraphy

MacNaughton

Moynihan

Roots

et al. 2016

Ichnos

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Trace fossils versus body fossils: Oldhamia recta revisited

Cited by 13 publications

References 23 publications

Enigmatic Ediacaran megascopic bedding plane structures on the Sonia Sandstone, Jodhpur Group, Marwar Supergroup, India: seaweed or problematica?

Enigmatic Ediacaran megascopic bedding plane structures on the Sonia Sandstone, Jodhpur Group, Marwar Supergroup, India: seaweed or problematica?

Who Was the First Person Known to Have Discovered Fossils of the Precambrian (Ediacaran) Organism Aspidella terranovica?

New Occurrences ofOldhamiain Eastern Yukon, Canada: Stratigraphic Context and Implications for Cambrian Deep-Marine Biostratigraphy

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